I-20-4720 Addendum 6.pdf

Illinois State Toll Highway Authority Contract No. I-20-4720 Addendum 6 Page 1 of 4 6/1/2026

ADDENDUM NO. 6

TO

CONTRACT REQUIREMENTS

FOR CONTRACT I-20-4720

ILLINOIS STATE TOLL HIGHWAY AUTHORITY

Date: 6/1/2026

For which bids will be received by the Illinois State Toll Highway Authority through electronic bidding via BidBuy until 10:30:00 A.M. local time, June 18, 2026

NOTICE OF REVISION TO CONTRACT

NOTES:

1. The following revised pages to the Contract Requirements are included with this Addendum and must be inserted into the Required Documents, Volume I, by the Bidder: DBE-2R, DBE-2A, T-2RR.

2. A complete set of Schedule of Prices is included with this Addendum and must be inserted into the Contract Bid by the Bidder. The Bidder’s attention is called to pages P-36RRR, P-38RRR, P-39RRR which have been revised and included as part of the Schedule of Prices.

3. The following revised Special Provision pages are included in the Contract with this Addendum: J-7R, J-8R, J-9RR, and J-10RR.

4. The following new Special Provision pages are included in the Contract with this Addendum: J-94A through J-94C, J-384B, and J-513A.

5. The following revised Contract Drawings are included in this Addendum:

Volume 1 – Drawing 9, 16-19

6. Revised Contract Drawings 20 through 28 will be issued to the successful Bidder. The revised drawings will reflect the quantity changes shown in the “Summary of Revisions to Pay Item Quantities” table included in this addendum.

Addendum 6 Page 2 of 4 6/1/2026

CHANGES TO THE CONTRACT REQUIREMENTS

CHANGES TO THE ADVERTISEMENT FOR SEALED BID

Change #1 Required Documents, Volume I, replace page DBE-2 with page DBE-2R (attached), This replacement contains the following revisions:

1.1. Clarified ineligible status.

Change #2 Required Documents, Volume I, add page DBE-2A (attached), This new sheet contains the following revisions:

2.1. Text shifting to the next page as a result from the revisions to DBE-2R.

Change #3 Required Documents, Volume I, replace page T-2R with page T-2RR (attached), This replacement contains the following revisions:

3.1. Revised the Time of Performance date.

CHANGES TO THE SCHEDULE OF PRICES

SUMMARY OF REVISIONS TO PAY ITEMS QUANTITIES

SP.

PROV.

PAY ITEM NO. DESCRIPTION UNIT

ORIGINAL

QUANTITY

CHANGE

NEW

QUANTITY

* JT106005 ALLOWANCE FOR STRUCTURAL BEAM STORAGE UNIT 10,000 +90,000 100,000

* JT109001 ALLOWANCE FOR CONTRACT ACCELERATION UNIT 0 +2,000,000 2,000,000

* JT154039

CONTRACT ALLOWANCE FOR UNFORESEEN TOLL

PLAZA WORK

UNIT 0 +200,000 200,000

* JT154092

CONTRACT ALLOWANCE FOR UNFORESEEN

STRUCTURE WORK

UNIT 100,000 +1,000,000 1,100,000

Change #4 Required Documents, Volume I, page P-36RR replaced with page P-36RRR. This replacement contains the following revisions (attached):

4.1. Revised the quantity for item JT106005 from 10,000 to 100,000.

4.2. Added the pay item JT109001 (ALLOWANCE FOR CONTRACT ACCELERATION) and included a quantity of

2,000,000 UNITS.

4.3. Added the pay item JT154039 (CONTRACT ALLOWANCE FOR UNFORESEEN TOLL PLAZA WORK) and included a quantity of 200,000 UNITS.

4.4. Revised the quantity for item JT154092 from 100,000 to 1,100,000.

Change #5 Required Documents, Volume I, page P-38RR replaced with page P-38RRR. This replacement contains

5.1. Deleted 999NEG46 from this page.

Change #6 Required Documents, Volume I, page P-39RR replaced with page P-39RRR. This replacement contains

6.1. Revised Total Amount of Contingency Work + Contractor’s Quality Program (CQP) from $20,930,000.00 to

$24,070,000.00.

Addendum 6 Page 3 of 4 6/1/2026

CHANGES TO THE CONTRACT SPECIAL PROVISIONS

Change #7 Special Provisions, Volume II, replace page J-7 with page J-7R. This replacement contains the following revisions (attached):

7.1. S.P. 103.3 Revised title to NOT USED.

Change #8 Special Provisions, Volume II, replace page J-8 with page J-8R. This replacement contains the

8.1. S.P. 104 NOTICE TO PROCEED Revised date to September 14, 2026.

8.2. S.P. 104.1 COMMENCEMENT OF ON-SITE WORK Revised date to January 18, 2027 and included language to reference S.P. 104.7.

8.3. S.P. 104.2 WORK START RESTRICTION DATE: AREA C - Revised title and description of specification.

8.4. S.P. 104.3 WORK START RESTRICTION DATE: AREA A - Revised title and description of specification.

8.5. S.P. 104.4 WORK START RESTRICTION DATE: AREA B - Revised title and description of specification.

Change #9 Special Provisions, Volume II, replace page J-9R with page J-9RR. This replacement contains

9.1. S.P. 104.5 Revised title to NOT USED.

9.2. S.P. 104.6 Revised title to NOT USED.

9.3. S.P. 104.7 WORK START RESTRICTION DATE: AREA E - Revised title and description of specification.

9.4. S.P. 104.8 Revised title to NOT USED.

Change #10 Special Provisions, Volume II, replace page J-10R with page J-10RR. This replacement contains

10.1. S.P. 105.1.3 Revised title to NOT USED.

Change #11 Special Provisions, Volume II, add the following Special Provision J-94A through J-94C. These new pages contains the following revisions (attached):

11.1. Added Specification for CONTRACT ACCELERATION.

Change #12 Special Provisions, Volume II, add the following Special Provision J-384B. This new page contains the

12.1. Added Specification for ALLOWANCE FOR CONTRACT ACCELERATION.

Change #13 Special Provisions, Volume II, add the following Special Provision J-513A. This new page contains the

13.1. Added Specification for CONTRACT ALLOWANCE FOR UNFORESEEN TOLL PLAZA WORK.

CHANGES TO THE CONTRACT DRAWINGS

Change #14 Contract Plans, Volume 1, Drawing 9. Work Restrictions. This drawing contains the following revisions

(attached):

14.1. Removed Area D and associated coordinates.

14.2. Removed arrow indicating Contractor Access North of Sta. 1258+50.

14.3. Revised legend.

Change #15 Contract Plans, Volume 1, Drawings 16 through 19. Suggested Progress Schedule. This drawing contains the following revisions (attached):

15.1. Removed SP 103.3, 104.5, 104.6, 104.8.

15.2. Revised SP 104 date to 9/14/2026.

15.3. Revised SP 104.1 date to 1/18/2027.

15.4. Revised SP 103.2 date to 8/1/2028.

Addendum 6 Page 4 of 4 6/1/2026

15.5. Revised titles of SP 104.2, 104.3, 104.4, 104.7, and item 7.

15.6. Revised item 30 finish date to 8/1/2028.

15.7. Revised item 96 finish date to 7/31/2028.

END OF ADDENDUM CHANGES

(Rev 7/2020) DBE - 2R Contract No I-20-4720

DBE Joint Venture means an association of two or more persons, or any combination of types of business enterprises and persons numbering two or more, proposing to perform as a single for profit business enterprise, in which each

Joint Venture partner contributes property, capital, efforts, skill and knowledge, and in which the DBE is responsible for a distinct, clearly defined portion of the work of the project and whose share in the capital contribution, control, management, risks, and profits of the Joint Venture are equal to its ownership interest. Joint Ventures must have an agreement in writing specifying the terms and conditions of the relationships between the partners and their relationship, risks and responsibility under the contract.

DBE Utilization Plan means the list of currently certified DBEs that the Bidder commits will be utilized, including its own participation as a DBE, if applicable, in the scopes of the work and the dollar values or the percentages of the work to be performed pursuant to this solicitation and in conformance with this Special Provision.

Good Faith Efforts means actions undertaken by a contractor to achieve a DBE contract goal, which, by their scope, intensity, and appropriateness to the objective, can reasonably be expected to fulfill the contract goal.

Ineligible Status means a business that is currently listed in the Illinois Unified Certification Program (ILUCP) but that has not submitted the required documentation for reevaluation. These firms have not been decertified. Accordingly, they will be counted for DBE goal credit on Tollway contracts.

Mobilization means preparatory work and operations necessary for the movement of personnel, equipment and incidentals to the project site for the establishment of offices, buildings and other facilities necessary for work on the project and for all other work operations which must be performed, or costs incurred when beginning work on the project.

Regular Dealer means a firm that owns, operates, or maintains a store, warehouse, or other establishment in which the materials, supplies, articles or equipment of the general character described by the specifications and required under the contract are bought, kept in stock, and regularly sold or leased to the public in the usual course of business.

To be a Regular Dealer, the firm must be an established, regular business that engages, as its principal business and under its own name, in the purchase and sale or lease of the products in question. A firm may be a Regular Dealer in such bulk items as petroleum products, steel, cement, gravel, stone, or asphalt without owning, operating, or maintaining a place of business if the firm both owns and operates distribution equipment for the products. Any supplementing of a Regular Dealer's distribution equipment shall be by a long-term lease agreement and not on an ad hoc or contract-by-contract basis. Packagers, manufacturer representatives, or other persons who arrange or expedite transactions are not Regular Dealers.

1. CONTRACTOR ASSURANCE

The contractor will assure that each of its employees and its subcontractors’ employees associated with the contract shall not discriminate on the basis of any protected category identified by law in the performance of this contract. Failure by the contractor to carry out these requirements is a material breach of this contract, which may result in the termination of this contract or such other remedy, as the Tollway deems appropriate.

2. DBE CONTRACT GOAL TO BE ACHIEVED BY THE CONTRACTOR

This contract includes a specific DBE utilization goal of 25% of the Core Work of the contract. The goal reflects the estimated availability of DBEs to perform the scopes of work of this contract, including as a prime contractor.

Consequently, in addition to the other award criteria established for this contract, ISTHA will award this contract to a

Bidder who either meets this goal or who demonstrates its good faith efforts to do so. The participation of DBEs will be calculated on the amount of the Core Work, not Contingency Work identified in the bid documents. The Contractor’s

DBE commitment will be assessed for any and all Extra Work Orders (EWO) and Change Orders (CO) at the time such orders are issued.

(Rev 7/2020) DBE - 2A Contract No I-20-4720

3. DBE, M/WBE and SBA 8(a) LOCATOR REFERENCES

Bidders should consult the Illinois Unified Certification Program (“ILUCP”) DBE Directory as a reference source for DBEs and the City of Chicago, the County of Cook M/WBE directories as reference sources for M/WBEs in construction certified by the City of Chicago or the County of Cook, or the Small Business Administration SBA 8(a) directory for SBA 8(a)s certified

T-2

CONTRACT NO: I-20-4720

CONTRACT BOND AGREEMENT

The contractor shall simultaneously herewith furnish and deliver to the Tollway a Performance Bond, agreeing to perform the work in accordance with all of the provisions of the contract, as in said Performance Bond provided, and a Payment Bond, agreeing to pay not less than prevailing wages for the work to be performed in accordance with the contract and the laws of the State of Illinois and agreeing to pay all sums of money due for any labor, materials, apparatus, fixtures or machinery and transportation with respect thereto, as in said Payment Bond provided, each dated the same date as this Agreement, in the forms prescribed by the Tollway, and each in an amount equal to the contract price with a corporate surety or sureties acceptable to the Tollway authorized to do business in the State of Illinois.

The contractor agrees that said Bonds shall be maintained in full force and effect until final acceptance of the work by the Tollway and thereafter, as provided in Article 103.05 of the Tollway Supplemental Specifications.

The contractor agrees and will cause the surety to agree to be bound by each and every provision of all of the contract documents.

If any surety upon any bond furnished in connection with this contract becomes unacceptable to the Tollway, or if any such surety fails to furnish reports as to its financial condition from time to time as requested by the Tollway, the contractor shall promptly furnish such additional security as may be required from time to time to protect the interests of the Tollway and all persons supplying labor or materials in the prosecution of the work contemplated by this contract.

In the event the surety shall make any assignment for the benefit of creditors or commit any act of bankruptcy, or if it shall be declared bankrupt, or if it shall file a voluntary petition in bankruptcy, or shall in the opinion of the Tollway be insolvent, the Contractor agrees forthwith upon request of the Tollway to furnish and maintain other corporate surety with respect to said Bonds satisfactory to the Tollway.

DEFINITIONS

As used in this Agreement, the terms set forth shall have the meanings attributed to them in the Tollway Supplemental Specifications for The Illinois State Toll Highway Authority issued by the Tollway.

TIME OF PERFORMANCE

The duration of this contract shall commence upon the work commencement date identified in the Notice to Proceed letter and shall continue until October 2, 2028, in accordance with the contract book schedule.

CONTRACT EXPIRATION DATE

The contract expiration date is two (2) years from the contract completion date. Based on the completion date stated in the contract at the time of award the contract expiration date is October 2, 2030.

This contract may be renewed for two (2) additional one (1) year terms or one (1) additional two (2) year term, the length of any renewal is to be determined and agreed upon by the Parties.

5R 5R

S.P.

PAY ITEM

NO.

DESIGNATION UNIT QUANTITY

UNIT PRICE

DOLLAR

AMOUNT

DOLLAR

* 20100110 TREE REMOVAL (6 TO 15 UNITS DIAMETER) UNIT 1,132

* 20100210 TREE REMOVAL (OVER 15 UNITS DIAMETER) UNIT 102

* 20100500 TREE REMOVAL, ACRES ACRE 8.50

* 20200100 EARTH EXCAVATION CU YD 368,567

* 20201200

REMOVAL AND DISPOSAL OF UNSUITABLE

MATERIAL

CU YD 2,523

20800150 TRENCH BACKFILL CU YD 11,405

25000400 NITROGEN FERTILIZER NUTRIENT POUND 470

25000600 POTASSIUM FERTILIZER NUTRIENT POUND 1,406

25000750 MOWING ACRE 15.00

25100115 MULCH, METHOD 2 ACRE 2.50

BDE 25100630 EROSION CONTROL BLANKET SQ YD 55,929

25100900 TURF REINFORCEMENT MAT SQ YD 1,062

28000500 INLET AND PIPE PROTECTION EACH 17

28100105 STONE RIPRAP, CLASS A3 SQ YD 5,691

31101200 SUBBASE GRANULAR MATERIAL, TYPE B 4" SQ YD 408

31101600 SUBBASE GRANULAR MATERIAL, TYPE B 8" SQ YD 1,132

35102200 AGGREGATE BASE COURSE, TYPE B 10" SQ YD 4,829

40200300 AGGREGATE SURFACE COURSE, TYPE A 4" SQ YD 12,760

SCHEDULE OF PRICES

THE ILLINOIS STATE TOLL HIGHWAY AUTHORITY

CONTRACT I-20-4720

SUPREME DRIVE TO I-90

MILE POST 3.9 TO MILE POST 6.3

ROADWAY AND BRIDGE CONSTRUCTION

ELGIN O'HARE WESTERN ACCESS TOLLWAY (I-490)

Contract I-20-4720 Addendum 6 P - 5 June 1, 2026R

NO.

DESIGNATION UNIT QUANTITY

UNIT PRICE

DOLLAR

AMOUNT

DOLLAR

SCHEDULE OF PRICES

THE ILLINOIS STATE TOLL HIGHWAY AUTHORITY

CONTRACT I-20-4720

SUPREME DRIVE TO I-90

MILE POST 3.9 TO MILE POST 6.3

ROADWAY AND BRIDGE CONSTRUCTION

ELGIN O'HARE WESTERN ACCESS TOLLWAY (I-490)

40200710 AGGREGATE SURFACE COURSE, TYPE A 10" SQ YD 706

40200800 AGGREGATE SURFACE COURSE, TYPE B TON 3,141

40600275 BITUMINOUS MATERIALS (PRIME COAT) POUND 75,149

D1 40603080

HOT-MIX ASPHALT BINDER COURSE, IL-19.0,

N50

TON 1,321

D1 40603085

HOT-MIX ASPHALT BINDER COURSE, IL-19.0,

N70

TON 525

D1 40604060

HOT-MIX ASPHALT SURFACE COURSE, IL-9.5,

MIX "D", N50

TON 126

D1 40604062

HOT-MIX ASPHALT SURFACE COURSE, IL-9.5,

MIX "D", N70

TON 350

42001300 PROTECTIVE COAT SQ YD 101,464

42300400

PORTLAND CEMENT CONCRETE DRIVEWAY

PAVEMENT, 8 INCH

SQ YD 79

42400200

PORTLAND CEMENT CONCRETE SIDEWALK 5

INCH

SQ FT 3,983

44000100 PAVEMENT REMOVAL SQ YD 11,763

44000500 COMBINATION CURB AND GUTTER REMOVAL FOOT 973

44000600 SIDEWALK REMOVAL SQ FT 533

44001980 CONCRETE BARRIER REMOVAL FOOT 1,512

44003510 MEDIAN REMOVAL PARTIAL DEPTH SQ FT 1,140

50104400 CONCRETE HEADWALL REMOVAL EACH 14

50200100 STRUCTURE EXCAVATION CU YD 12,401

50200450

REMOVAL AND DISPOSAL OF UNSUITABLE

MATERIAL FOR STRUCTURES

CU YD 7,993

Addendum 6 P - 6 June 1, 2026R

NO.

DESIGNATION UNIT QUANTITY

UNIT PRICE

DOLLAR

AMOUNT

DOLLAR

SCHEDULE OF PRICES

THE ILLINOIS STATE TOLL HIGHWAY AUTHORITY

CONTRACT I-20-4720

SUPREME DRIVE TO I-90

MILE POST 3.9 TO MILE POST 6.3

ROADWAY AND BRIDGE CONSTRUCTION

ELGIN O'HARE WESTERN ACCESS TOLLWAY (I-490)

* 50300225 CONCRETE STRUCTURES CU YD 3,178.7

* 50300255 CONCRETE SUPERSTRUCTURE CU YD 1,642.0

50300300 PROTECTIVE COAT SQ YD 32,155

50401330

FURNISHING AND ERECTING PRECAST

PRESTRESSED CONCRETE BEAMS, IL54

FOOT 1,496

50401340

FURNISHING AND ERECTING PRECAST

PRESTRESSED CONCRETE BEAMS, IL63

FOOT 2,883

50500105

FURNISHING AND ERECTING STRUCTURAL

STEEL

L SUM 1

50500505 STUD SHEAR CONNECTORS EACH 21,657

* 50800105 REINFORCEMENT BARS POUND 395,240

* 50800205 REINFORCEMENT BARS, EPOXY COATED POUND 2,788,800

* 50800530 MECHANICAL SPLICERS EACH 1,472

50901760 PIPE HANDRAIL FOOT 122

BDE 51100100 SLOPE WALL 4 INCH SQ YD 837

51201600 FURNISHING STEEL PILES HP12X53 FOOT 2,518

51201800 FURNISHING STEEL PILES HP14X73 FOOT 6,125

51201900 FURNISHING STEEL PILES HP14X89 FOOT 2,833

51202305 DRIVING PILES FOOT 11,547

51203600 TEST PILE STEEL HP12X53 EACH 6

51203800 TEST PILE STEEL HP 14X73 EACH 4

Addendum 6 P - 7 June 1, 2026RR

NO.

DESIGNATION UNIT QUANTITY

UNIT PRICE

DOLLAR

AMOUNT

DOLLAR

SCHEDULE OF PRICES

THE ILLINOIS STATE TOLL HIGHWAY AUTHORITY

CONTRACT I-20-4720

SUPREME DRIVE TO I-90

MILE POST 3.9 TO MILE POST 6.3

ROADWAY AND BRIDGE CONSTRUCTION

ELGIN O'HARE WESTERN ACCESS TOLLWAY (I-490)

51203900 TEST PILE STEEL HP14X89 EACH 2

51204550 PILE LOAD TEST EACH 4

51204650 PILE SHOES EACH 321

GBSP 51602000 PERMANENT CASING FOOT 1,672

GBSP 51603000 DRILLED SHAFT IN SOIL CU YD 21.1

52100520 ANCHOR BOLTS, 1" EACH 160

52100540 ANCHOR BOLTS, 1 1/2 " EACH 80

52200700 PRECAST MODULAR RETAINING WALL SQ FT 6,904

* 52200900 CONCRETE STRUCTURES (RETAINING WALL) CU YD 4,146.3

5425A018

PIPE CULVERTS, CLASS A, TYPE 5 18"

(TEMPORARY)

FOOT 1,033

550A0050 STORM SEWERS, CLASS A, TYPE 1 12" FOOT 289

550A0070 STORM SEWERS, CLASS A, TYPE 1 15" FOOT 90

550A0120 STORM SEWERS, CLASS A, TYPE 1 24" FOOT 81

550A0340 STORM SEWERS, CLASS A, TYPE 2 12" FOOT 395

550A0360 STORM SEWERS, CLASS A, TYPE 2 15" FOOT 5,369

550A0380 STORM SEWERS, CLASS A, TYPE 2 18" FOOT 2,496

550A0400 STORM SEWERS, CLASS A, TYPE 2 21" FOOT 179

550A0410 STORM SEWERS, CLASS A, TYPE 2 24" FOOT 1,437

Addendum 6 P - 8 June 1, 2026R

NO.

DESIGNATION UNIT QUANTITY

UNIT PRICE

DOLLAR

AMOUNT

DOLLAR

SCHEDULE OF PRICES

THE ILLINOIS STATE TOLL HIGHWAY AUTHORITY

CONTRACT I-20-4720

SUPREME DRIVE TO I-90

MILE POST 3.9 TO MILE POST 6.3

ROADWAY AND BRIDGE CONSTRUCTION

ELGIN O'HARE WESTERN ACCESS TOLLWAY (I-490)

550A0430 STORM SEWERS, CLASS A, TYPE 2 30" FOOT 121

550A0450 STORM SEWERS, CLASS A, TYPE 2 36" FOOT 789

550A0470 STORM SEWERS, CLASS A, TYPE 2 42" FOOT 76

550A0480 STORM SEWERS, CLASS A, TYPE 2 48" FOOT 24

550A0500 STORM SEWERS, CLASS A, TYPE 2 60" FOOT 7

550A0660 STORM SEWERS, CLASS A, TYPE 3 15" FOOT 70

550A0680 STORM SEWERS, CLASS A, TYPE 3 18" FOOT 83

550A0710 STORM SEWERS, CLASS A, TYPE 3 24" FOOT 877

550A0750 STORM SEWERS, CLASS A, TYPE 3 36" FOOT 793

550A0780 STORM SEWERS, CLASS A, TYPE 3 48" FOOT 493

550A1050 STORM SEWERS, CLASS A, TYPE 4 36" FOOT 89

550A1080 STORM SEWERS, CLASS A, TYPE 4 48" FOOT 577

550A1640 STORM SEWERS, CLASS A, TYPE 6 42" FOOT 87

55100400 STORM SEWER REMOVAL 10" FOOT 32

55100500 STORM SEWER REMOVAL 12" FOOT 325

55100700 STORM SEWER REMOVAL 15" FOOT 236

55100900 STORM SEWER REMOVAL 18" FOOT 584

55101200 STORM SEWER REMOVAL 24" FOOT 647

Addendum 6 P - 9 June 1, 2026R

NO.

DESIGNATION UNIT QUANTITY

UNIT PRICE

DOLLAR

AMOUNT

DOLLAR

SCHEDULE OF PRICES

THE ILLINOIS STATE TOLL HIGHWAY AUTHORITY

CONTRACT I-20-4720

SUPREME DRIVE TO I-90

MILE POST 3.9 TO MILE POST 6.3

ROADWAY AND BRIDGE CONSTRUCTION

ELGIN O'HARE WESTERN ACCESS TOLLWAY (I-490)

55101400 STORM SEWER REMOVAL 30" FOOT 434

55101600 STORM SEWER REMOVAL 36" FOOT 81

55101900 STORM SEWER REMOVAL 48" FOOT 5

56103200 DUCTILE IRON WATER MAIN 10" FOOT 47

56103300 DUCTILE IRON WATER MAIN 12" FOOT 1,878

* 56400500 FIRE HYDRANTS TO BE REMOVED EACH 1

* 56400820

FIRE HYDRANT WITH AUXILIARY VALVE AND

VALVE BOX

EACH 2

* 56500500 DOMESTIC METER VAULTS EACH 1

58600101 GRANULAR BACKFILL FOR STRUCTURES CU YD 765

58700300 CONCRETE SEALER SQ FT 34,833

59100100 GEOCOMPOSITE WALL DRAIN SQ YD 826

60146304 PIPE UNDERDRAINS FOR STRUCTURES 4" FOOT 944

60146305

PIPE UNDERDRAINS FOR STRUCTURES

(SPECIAL) 4"

FOOT 180

60146306 PIPE UNDERDRAINS FOR STRUCTURES 6" FOOT 392

60200105

CATCH BASINS, TYPE A, 4'-DIAMETER, TYPE 1

FRAME, OPEN LID

EACH 3

60200805

CATCH BASINS, TYPE A, 4'-DIAMETER, TYPE 8

GRATE

EACH 2

60218400

MANHOLES, TYPE A, 4'-DIAMETER, TYPE 1

FRAME, CLOSED LID

EACH 9

60219000

MANHOLES, TYPE A, 4'-DIAMETER, TYPE 8

GRATE

EACH 3

Addendum 6 P - 10 June 1, 2026

NO.

DESIGNATION UNIT QUANTITY

UNIT PRICE

DOLLAR

AMOUNT

DOLLAR

SCHEDULE OF PRICES

THE ILLINOIS STATE TOLL HIGHWAY AUTHORITY

CONTRACT I-20-4720

SUPREME DRIVE TO I-90

MILE POST 3.9 TO MILE POST 6.3

ROADWAY AND BRIDGE CONSTRUCTION

ELGIN O'HARE WESTERN ACCESS TOLLWAY (I-490)

60221100

MANHOLES, TYPE A, 5'-DIAMETER, TYPE 1

FRAME, CLOSED LID

EACH 6

60221700

MANHOLES, TYPE A, 5'-DIAMETER, TYPE 8

GRATE

EACH 7

60223800

MANHOLES, TYPE A, 6'-DIAMETER, TYPE 1

FRAME, CLOSED LID

EACH 4

60223810

MANHOLES, TYPE A, 6'-DIAMETER, TYPE 3

FRAME AND GRATE

EACH 1

60224005

MANHOLES, TYPE A, 6'-DIAMETER, TYPE 8

GRATE

EACH 1

60224446

MANHOLES, TYPE A, 7'-DIAMETER, TYPE 1

FRAME, CLOSED LID

EACH 2

60224458

MANHOLES, TYPE A, 8'-DIAMETER, TYPE 8

GRATE

EACH 1

60224459

MANHOLES, TYPE A, 8'-DIAMETER, TYPE 1

FRAME, CLOSED LID

EACH 4

60224469

MANHOLES, TYPE A, 9'-DIAMETER, TYPE 1

FRAME, CLOSED LID

EACH 1

60250200 CATCH BASINS TO BE ADJUSTED EACH 2

60252800 CATCH BASINS TO BE RECONSTRUCTED EACH 2

60500040 REMOVING MANHOLES EACH 9

60500050 REMOVING CATCH BASINS EACH 11

60500060 REMOVING INLETS EACH 1

60600095 CLASS SI CONCRETE (OUTLET) CU YD 9

60603800

COMBINATION CONCRETE CURB AND

GUTTER, TYPE B-6.12

FOOT 782

60605000

COMBINATION CONCRETE CURB AND

GUTTER, TYPE B-6.24

FOOT 447

* 66900530 SOIL DISPOSAL ANALYSIS EACH 8

Addendum 6 P - 11 June 1, 2026

NO.

DESIGNATION UNIT QUANTITY

UNIT PRICE

DOLLAR

AMOUNT

DOLLAR

SCHEDULE OF PRICES

THE ILLINOIS STATE TOLL HIGHWAY AUTHORITY

CONTRACT I-20-4720

SUPREME DRIVE TO I-90

MILE POST 3.9 TO MILE POST 6.3

ROADWAY AND BRIDGE CONSTRUCTION

ELGIN O'HARE WESTERN ACCESS TOLLWAY (I-490)

67201000 SEALING ABANDONED WATER WELLS EACH 1

70301100

TEMPORARY PAVEMENT MARKING LETTERS

AND SYMBOLS - EPOXY

SQ FT 115

70301120

TEMPORARY PAVEMENT MARKING - LINE 4" -

EPOXY

FOOT 785

70301210

TEMPORARY PAVEMENT MARKING - LINE 24" -

EPOXY

FOOT 785

D1 72000100 SIGN PANEL - TYPE 1 SQ FT 33

D1 72000200 SIGN PANEL - TYPE 2 SQ FT 28

BDE 78005100

EPOXY PAVEMENT MARKING - LETTERS AND

SYMBOLS

SQ FT 80

BDE 78005110 EPOXY PAVEMENT MARKING - LINE 4" FOOT 1,809

BDE 78005130 EPOXY PAVEMENT MARKING - LINE 6" FOOT 35

BDE 78005150 EPOXY PAVEMENT MARKING - LINE 12" FOOT 681

BDE 78005180 EPOXY PAVEMENT MARKING - LINE 24" FOOT 77

78300202

PAVEMENT MARKING REMOVAL - WATER

BLASTING

SQ FT 350

D1 81028200

UNDERGROUND CONDUIT, GALVANIZED

STEEL, 2" DIA.

FOOT 1,475

D1 81028220

UNDERGROUND CONDUIT, GALVANIZED

STEEL, 3" DIA.

FOOT 24

D1 81028240

UNDERGROUND CONDUIT, GALVANIZED

STEEL, 4" DIA.

FOOT 511

D1 81100600

CONDUIT ATTACHED TO STRUCTURE, 2" DIA.,

GALVANIZED STEEL

FOOT 1,066

81300800

JUNCTION BOX, STAINLESS STEEL,

ATTACHED TO STRUCTURE, 18" X 12" X 6"

EACH 5

D1 81400100 HANDHOLE EACH 9

Addendum 6 P - 12 June 1, 2026

NO.

DESIGNATION UNIT QUANTITY

UNIT PRICE

DOLLAR

AMOUNT

DOLLAR

SCHEDULE OF PRICES

THE ILLINOIS STATE TOLL HIGHWAY AUTHORITY

CONTRACT I-20-4720

SUPREME DRIVE TO I-90

MILE POST 3.9 TO MILE POST 6.3

ROADWAY AND BRIDGE CONSTRUCTION

ELGIN O'HARE WESTERN ACCESS TOLLWAY (I-490)

D1 81400300 DOUBLE HANDHOLE EACH 2

D1 85000200

MAINTENANCE OF EXISTING TRAFFIC SIGNAL

INSTALLATION

EACH 3

86400100 TRANSCEIVER - FIBER OPTIC EACH 1

D1 87300925

ELECTRIC CABLE IN CONDUIT, TRACER, NO.

14 1C

FOOT 1,773

D1 87301225

ELECTRIC CABLE IN CONDUIT, SIGNAL NO. 14

3C

FOOT 303

D1 87301245

ELECTRIC CABLE IN CONDUIT, SIGNAL NO. 14

5C

FOOT 3,319

D1 87301305

ELECTRIC CABLE IN CONDUIT, LEAD-IN, NO.

14 1 PAIR

FOOT 1,484

D1 87301805

ELECTRIC CABLE IN CONDUIT, SERVICE, NO.

6 2 C

FOOT 381

D1 87301900

ELECTRIC CABLE IN CONDUIT, EQUIPMENT

GROUNDING CONDUCTOR, NO. 6 1C

FOOT 640

D1 87502500

TRAFFIC SIGNAL POST, GALVANIZED STEEL

16 FT.

EACH 1

D1 87700170

STEEL MAST ARM ASSEMBLY AND POLE, 26

FT.

EACH 1

D1 87700230

STEEL MAST ARM ASSEMBLY AND POLE, 38

FT.

EACH 1

D1 87700300

STEEL MAST ARM ASSEMBLY AND POLE, 52

FT.

EACH 1

D1 87700420

STEEL MAST ARM ASSEMBLY AND POLE, 70

FT.

EACH 1

D1 87800100 CONCRETE FOUNDATION, TYPE A FOOT 4

D1 87800150 CONCRETE FOUNDATION, TYPE C FOOT 4

D1 87800400

CONCRETE FOUNDATION, TYPE E 30-INCH

DIAMETER

FOOT 24

D1 87800415

CONCRETE FOUNDATION, TYPE E 36-INCH

DIAMETER

FOOT 15

Addendum 6 P - 13 June 1, 2026

NO.

DESIGNATION UNIT QUANTITY

UNIT PRICE

DOLLAR

AMOUNT

DOLLAR

SCHEDULE OF PRICES

THE ILLINOIS STATE TOLL HIGHWAY AUTHORITY

CONTRACT I-20-4720

SUPREME DRIVE TO I-90

MILE POST 3.9 TO MILE POST 6.3

ROADWAY AND BRIDGE CONSTRUCTION

ELGIN O'HARE WESTERN ACCESS TOLLWAY (I-490)

D1 87800420

CONCRETE FOUNDATION, TYPE E 42-INCH

DIAMETER

FOOT 25

87900200 DRILL EXISTING HANDHOLE EACH 1

D1 88030020

SIGNAL HEAD, LED, 1-FACE, 3-SECTION, MAST-

ARM MOUNTED

EACH 11

D1 88030050

SIGNAL HEAD, LED, 1-FACE, 3-SECTION,

BRACKET MOUNTED

EACH 4

D1 88200410

TRAFFIC SIGNAL BACKPLATE, LOUVERED,

FORMED PLASTIC

EACH 11

D1 88600100 DETECTOR LOOP, TYPE I FOOT 309

D1 88700200 LIGHT DETECTOR EACH 2

D1 88700300 LIGHT DETECTOR AMPLIFIER EACH 1

D1 89000100 TEMPORARY TRAFFIC SIGNAL INSTALLATION EACH 1

* A2002572

TREE, CARPINUS CAROLINIANA (AMERICAN

HORNBEAM), 1-1/2" CALIPER, TREE FORM

BALLED AND BURLAPPED

EACH 44

* A2005016

TREE, GYMNOCLADUS DIOICUS (KENTUCKY

COFFEETREE), 2" CALIPER, BALLED AND

BURLAPPED

EACH 10

* A2005616

TREE, OSTRYA VIRGINIANA (AMERICAN

HOPHORNBEAM), 2" CALIPER, BALLED AND

BURLAPPED

EACH 37

* B2006016

TREE, SYRINGA PEKINENSIS (PEKING LILAC),

2" CALIPER, TREE FORM, BALLED AND

BURLAPPED

EACH 26

* B2006316

TREE, SYRINGA RETICULATA IVORY SILK

(IVORY SILK JAPANESE TREE LILAC), 2"

CALIPER, TREE FORM, BALLED AND

BURLAPPED

EACH 14

* C2001636

SHRUB, CORNUS SERICEA (REDOSIER

DOGWOOD), 3' HEIGHT, BALLED AND

BURLAPPED

EACH 102

* C2011736

SHRUB, VIBURNUM DENTATUM

(ARROWWOOD VIBURNUM), 3' HEIGHT,

BALLED AND BURLAPPED

EACH 171

* K0036120 MULCH PLACEMENT 4" SQ YD 422

* K1005482 SHREDDED BARK MULCH 4" SQ YD 422

Addendum 6 P - 14 June 1, 2026

NO.

DESIGNATION UNIT QUANTITY

UNIT PRICE

DOLLAR

AMOUNT

DOLLAR

SCHEDULE OF PRICES

THE ILLINOIS STATE TOLL HIGHWAY AUTHORITY

CONTRACT I-20-4720

SUPREME DRIVE TO I-90

MILE POST 3.9 TO MILE POST 6.3

ROADWAY AND BRIDGE CONSTRUCTION

ELGIN O'HARE WESTERN ACCESS TOLLWAY (I-490)

GBSP X0320051

CROSSHOLE SONIC LOGGING ACCESS

DUCTS

FOOT 1,752

GBSP X0320052 CROSSHOLE SONIC LOGGING TESTING EACH 16

D1 X0324085

EMERGENCY VEHICLE PRIORITY SYSTEM

LINE SENSOR CABLE, NO. 20 3/C

FOOT 312

D1 X0324599 ROD AND CLEAN EXISTING CONDUIT FOOT 252

* X0328019

REMOVEAND RE-ERECT MECHANICALLY

STABILIZED EARTH PANELS

SQ FT 350

* X0328027 SECURITY GATE EACH 5

D1 X1400150

SERVICE INSTALLATION, GROUND MOUNTED,

METERED

EACH 1

* X2011000 TEMPORARY FENCE (SPECIAL) FOOT 2,182

* X2090210 POROUS GRANULAR BACKFILL (SPECIAL) CU YD 20,344

* X2501845 SEEDING, CLASS 7 (SPECIAL) ACRE 8.25

* X2503000 MAINTENANCE MOWING ACRE 31.00

* X2503110 MOWING (SPECIAL) ACRE 1.00

* X4400070 CURB CUT FOOT 65

GBSP X5030250 BRIDGE DECK GROOVING (LONGITUDINAL) SQ YD 14,838

* X5030290 STAINING CONCRETE STRUCTURES SQ FT 20,813

GBSP X5080530 BAR TERMINATORS EACH 4,315

GBSP X5211455

HIGH LOAD MULTI-ROTATIONAL BEARINGS,

DISC, FIXED-1250K

EACH 4

GBSP X5211535

HIGH LOAD MULTI-ROTATIONAL BEARINGS,

DISC, NON-GUIDED EXPANSION-700K

EACH 16

Addendum 6 P - 15 June 1, 2026R

NO.

DESIGNATION UNIT QUANTITY

UNIT PRICE

DOLLAR

AMOUNT

DOLLAR

SCHEDULE OF PRICES

THE ILLINOIS STATE TOLL HIGHWAY AUTHORITY

CONTRACT I-20-4720

SUPREME DRIVE TO I-90

MILE POST 3.9 TO MILE POST 6.3

ROADWAY AND BRIDGE CONSTRUCTION

ELGIN O'HARE WESTERN ACCESS TOLLWAY (I-490)

GBSP X5211625

HIGH LOAD MULTI-ROTATIONAL BEARINGS,

DISC, GUIDED EXPANSION-500K

EACH 16

GBSP X5211655

HIGH LOAD MULTI-ROTATIONAL BEARINGS,

DISC, GUIDED EXPANSION-1250K

EACH 4

* X5510011

PROPOSED STORM SEWER CONNECTION TO

EXISTING MANHOLE

EACH 10

* X5537900 STORM SEWERS TO BE CLEANED 15" FOOT 1,053

* X5538000 STORM SEWERS TO BE CLEANED 18" FOOT 986

* X5538200 STORM SEWERS TO BE CLEANED 24" FOOT 409

* X5538400 STORM SEWERS TO BE CLEANED 30" FOOT 414

* X5538600 STORM SEWERS TO BE CLEANED 36" FOOT 281

* X5610004 DUCTILE IRON WATER MAIN FITTINGS POUND 1,849

* X5610712 WATER MAIN REMOVAL, 12" FOOT 1,345

* X5630712 CONNECTION TO EXISTING WATER MAIN 12" EACH 1

* X6020293

MANHOLES, TYPE A, 8'-DIAMETER, WITH 2

TYPE 1 FRAMES, CLOSED LID, RESTRICTOR

PLATE

EACH 1

* X6025300 CATCH BASINS TO BE ADJUSTED (SPECIAL) EACH 24

* X6026622 VALVE VAULTS TO BE REMOVED EACH 3

* X6026631 AUXILIARY VALVE AND VALVE BOX EACH 1

* X6028000

MANHOLES TO BE RECONSTRUCTED

(SPECIAL)

EACH 1

* X6050174 PLUG EXISTING STORM SEWERS CU YD 3

* X6050188 PLUG PIPE PENETRATION EACH 1

Addendum 6 P - 16 June 1, 2026

NO.

DESIGNATION UNIT QUANTITY

UNIT PRICE

DOLLAR

AMOUNT

DOLLAR

SCHEDULE OF PRICES

THE ILLINOIS STATE TOLL HIGHWAY AUTHORITY

CONTRACT I-20-4720

SUPREME DRIVE TO I-90

MILE POST 3.9 TO MILE POST 6.3

ROADWAY AND BRIDGE CONSTRUCTION

ELGIN O'HARE WESTERN ACCESS TOLLWAY (I-490)

* X6050192

REMOVAL OF TEMPORARY STORM SEWER

PLUGS

EACH 2

* X6050218 FILLING EXISTING SEPTIC TANK EACH 1

* X6061310

CONCRETE MEDIAN SURFACE, 4 INCH

(SPECIAL)

SQ FT 6,944

* X6640104 FENCE REMOVAL FOOT 14,584

* X6640500 CHAIN LINK GATE ASSEMBLY (SPECIAL) EACH 2

* X6640570 CHAIN LINK FENCE, 8' (SPECIAL) FOOT 1,169

* X7010216

TRAFFIC CONTROL AND PROTECTION,

(SPECIAL)

L SUM 1

D1 X8570233

FULL-ACTUATED CONTROLLER AND TYPE

SUPER P CABINET (SPECIAL)

EACH 1

D1 X8620200

UNINTERRUPTABLE POWER SUPPLY

(SPECIAL)

EACH 1

D1 X8710024

FIBER OPTIC CABLE IN CONDUIT, NO.

62.5/125, MM12F SM24F

FOOT 1,780

D1 X8900104 TEMPORARY TRAFFIC SIGNAL TIMING EACH 1

* Z0007601 BUILDING REMOVAL NO. 1 L SUM 1

* Z0007602 BUILDING REMOVAL NO. 2 L SUM 1

D1 Z0033056 OPTIMIZE TRAFFIC SIGNAL SYSTEM EACH 2

GBSP Z0034809 MODULAR EXPANSION JOINT-SWIVEL 9" FOOT 572

* Z0056616

STORM SEWER (WATER MAIN

REQUIREMENTS) 24 INCH

FOOT 18

* Z0056620

STORM SEWER (WATER MAIN

REQUIREMENTS) 30 INCH

FOOT 85

376FOOTSTEEL CASINGS 24"Z0067900*

Addendum 6 P - 17 June 1, 2026R

NO.

DESIGNATION UNIT QUANTITY

UNIT PRICE

DOLLAR

AMOUNT

DOLLAR

SCHEDULE OF PRICES

THE ILLINOIS STATE TOLL HIGHWAY AUTHORITY

CONTRACT I-20-4720

SUPREME DRIVE TO I-90

MILE POST 3.9 TO MILE POST 6.3

ROADWAY AND BRIDGE CONSTRUCTION

ELGIN O'HARE WESTERN ACCESS TOLLWAY (I-490)

* JI204005 FURNISHED EXCAVATION (SPECIAL) CU YD 5,810

* JI209040 SAND BACKFILL (SPECIAL) CU YD 1,137

* JI210100 GEOTECHNICAL FABRIC, SPECIAL SQ YD 60,493

* JI211110 TOPSOIL EXCAVATION AND PLACEMENT CU YD 28,459

* JI211112 TOPSOIL EXCAVATION AND DISPOSAL CU YD 12,722

* JI251010

EROSION CONTROL BLANKET,

BIODEGRADABLE NETTING

SQ YD 324,467

* JI282010 SUBGRADE FILTER FABRIC SQ YD 143,580

* JI312022 STABILIZED SUBBASE – WMA, 3” SQ YD 88,087

* JI406107 ASPHALT TACK COAT POUND 19,396

* JI406900

CONSTRUCTING WARM MIX ASPHALT TEST

STRIP

EACH 7

* JI420005

PORTLAND CEMENT CONCRETE PAVEMENT

10" (JOINTED)

SQ YD 24,836

* JI420040 BRIDGE APPROACH SLAB SQ YD 2,849

* JI420041 TRANSITION APPROACH SLAB SQ YD 4,779

* JI420046 TRANSITION APPROACH SHOULDER SLAB SQ YD 358

* JI481070 AGGREGATE SHOULDERS SPECIAL, TYPE C TON 600

* JI481130

AGGREGATE SHOULDERS WITH FILTER

FABRIC, TYPE B 4"

SQ YD 5,676

8SQ FT

COLORED CONCRETE SURFACE, 5"

(STAMPED)

JA424006*

Addendum 6 P - 18 June 1, 2026RR

NO.

DESIGNATION UNIT QUANTITY

UNIT PRICE

DOLLAR

AMOUNT

DOLLAR

SCHEDULE OF PRICES

THE ILLINOIS STATE TOLL HIGHWAY AUTHORITY

CONTRACT I-20-4720

SUPREME DRIVE TO I-90

MILE POST 3.9 TO MILE POST 6.3

ROADWAY AND BRIDGE CONSTRUCTION

ELGIN O'HARE WESTERN ACCESS TOLLWAY (I-490)

* JI482104 WARM-MIX ASPHALT SHOULDERS (6 IN.) SQ YD 24,294

* JI482114 WARM-MIX ASPHALT SHOULDERS (10 IN.) SQ YD 26,468

* JI483500

PORTLAND CEMENT CONCRETE SHOULDERS

(JOINTED) 10"

SQ YD 260

* JI503010

HIGH PERFORMANCE CONCRETE

SUPERSTRUCTURE

CU YD 3,286.1

* JI503020

HIGH PERFORMANCE CONCRETE MOMENT

SLAB STRUCTURES

CU YD 3,112.0

* JI503230 MASS CONCRETE STRUCTURES CU YD 1,899.5

* JI512305 DRIVING PILES, SPECIAL FOOT 15,915

* JI516030 DRILLED SHAFT IN SOIL, MASS CONCRETE CU YD 2,055.0

* JI516040 DRILLED SHAFT IN ROCK, MASS CONCRETE CU YD 83.8

GBSP JI521879

HIGH LOAD MULTI-ROTATIONAL BEARINGS,

DISC, NON-GUIDED EXPANSION-1500K

EACH 8

* JI522500

MECHANICALLY STABILIZED EARTH

RETAINING WALL

SQ FT 37,887

* JI522503

MECHANICALLY STABILIZED EARTH

RETAINING WALL, SPECIAL

SQ FT 43,341

* JI522801

ADJUST EXISTING MECHANICALLY

STABILIZED EARTH RETAINING WALL,

LOCATION 1

L SUM 1

* JI522802

ADJUST EXISTING MECHANICALLY

STABILIZED EARTH RETAINING WALL,

LOCATION 2

L SUM 1

* JI522803

ADJUST EXISTING MECHANICALLY

STABILIZED EARTH RETAINING WALL,

LOCATION 3

L SUM 1

* JI522804

ADJUST EXISTING MECHANICALLY

STABILIZED EARTH RETAINING WALL,

LOCATION 4

L SUM 1

* JI522805

ADJUST EXISTING MECHANICALLY

STABILIZED EARTH RETAINING WALL,

LOCATION 5

L SUM 1

* JI522806

ADJUST EXISTING MECHANICALLY

STABILIZED EARTH RETAINING WALL,

LOCATION 6

L SUM 1

Addendum 6 P - 19 June 1, 2026R

NO.

DESIGNATION UNIT QUANTITY

UNIT PRICE

DOLLAR

AMOUNT

DOLLAR

SCHEDULE OF PRICES

THE ILLINOIS STATE TOLL HIGHWAY AUTHORITY

CONTRACT I-20-4720

SUPREME DRIVE TO I-90

MILE POST 3.9 TO MILE POST 6.3

ROADWAY AND BRIDGE CONSTRUCTION

ELGIN O'HARE WESTERN ACCESS TOLLWAY (I-490)

* JI599007

TEMPORARY SOIL RETENTION SYSTEM TO

REMAIN IN PLACE

SQ FT 3,836

* JI599021

FORM LINER TEXTURED SURFACE,

LOCATION 1

EACH 1

* JI599023

FORM LINER TEXTURED SURFACE,

LOCATION 3

EACH 1

* JI599040 FORM LINER TEXTURED SURFACE (SPECIAL) SQ FT 9,092

* JI601307

PIPE UNDERDRAINS, DIRECTIONALLY BORED,

8"

FOOT 380

* JI602115

CATCH BASINS, TYPE G-2, TYPE G-2 FRAME

AND GRATE

EACH 3

* JI602117

CATCH BASINS, TYPE G-2, TYPE G-2

MODIFIED FRAME AND GRATE

EACH 5

* JI602120

CATCH BASINS, TYPE G-3, TYPE G-3 FRAME

AND GRATE

EACH 8

* JI602128

CATCH BASINS, TYPE G-3 (MODIFIED), TYPE

20A FRAME AND GRATE

EACH 29

* JI602130

CATCH BASINS, TYPE G-4, TYPE G-3 FRAME

AND GRATE

EACH 1

* JI602184

CATCH BASINS, TYPE A, 4'-DIAMETER, TYPE

20A FRAME AND GRATE

EACH 21

* JI602190

CATCH BASINS, TYPE G-3 (MODIFIED), TYPE

G-3 FRAME AND GRATE

EACH 5

* JI602200

CATCH BASINS, TYPE A, 4'-DIAMETER,

SPECIAL

EACH 2

* JI602311

MANHOLE, TYPE A, 4 FT DIAMETER, TYPE 20A

FRAME AND GRATE

EACH 11

* JI602332

MANHOLE, TYPE A, 6 FT DIAMETER, TYPE G-3

FRAME AND GRATE

EACH 9

* JI602335

MANHOLE, TYPE A, 6 FT DIAMETER, TYPE 20A

FRAME AND GRATE

EACH 2

* JI602338

MANHOLE, TYPE A, 8 FT DIAMETER, TYPE G-3

FRAME AND GRATE

EACH 1

* JI602344

MANHOLE, TYPE A, 7 FT DIAMETER, TYPE 20A

FRAME AND GRATE

EACH 1

Addendum 6 P - 20 June 1, 2026

NO.

DESIGNATION UNIT QUANTITY

UNIT PRICE

DOLLAR

AMOUNT

DOLLAR

SCHEDULE OF PRICES

THE ILLINOIS STATE TOLL HIGHWAY AUTHORITY

CONTRACT I-20-4720

SUPREME DRIVE TO I-90

MILE POST 3.9 TO MILE POST 6.3

ROADWAY AND BRIDGE CONSTRUCTION

ELGIN O'HARE WESTERN ACCESS TOLLWAY (I-490)

* JI602369

MANHOLE, TYPE A, 10 FT DIAMETER, TYPE G-

3 FRAME AND GRATE

EACH 1

* JI602508

DRAINAGE STRUCTURES TO BE ADJUSTED

WITH TYPE G-3 FRAME AND GRATE

EACH 1

* JI602518

DRAINAGE STRUCTURES TO BE ADJUSTED

WITH TYPE 20A FRAME AND GRATE

EACH 2

* JI602606

DRAINAGE STRUCTURES TO BE

RECONSTRUCTED WITH TYPE 20A FRAME

AND GRATE

EACH 11

* JI602740

DRAINAGE STRUCTURES, TYPE 4 WITH TWO

TYPE 20A FRAME AND GRATE

EACH 19

* JI602801

CATCH BASINS, TYPE G-4, TYPE 20A FRAME

AND GRATE

EACH 2

* JI602804

CATCH BASINS, TYPE G-4, WITH SPECIAL

FRAME AND GRATE WITH RESTRICTOR

PLATE

EACH 1

* JI606010 GUTTER, TYPE G-2 FOOT 1,023

* JI606015 GUTTER, TYPE G-2, MODIFIED FOOT 285

* JI606020 GUTTER, TYPE G-3 FOOT 3,188

* JI606030 GUTTER, TYPE G-3, MODIFIED FOOT 182

* JI606050 CONCRETE GUTTER (SPECIAL) FOOT 4,759

* JI631110

TRAFFIC BARRIER TERMINAL, TYPE T1

(SPECIAL) TANGENT

EACH 6

* JI637017 CONCRETE BARRIER BASE (SPECIAL) FOOT 191

* JI642012 ASPHALT SHOULDER RUMBLE STRIP, 8 INCH FOOT 15,120

* JI642014 ASPHALT SHOULDER RUMBLE STRIP, 16 INCH FOOT 6,533

* JI642020 CONCRETE SHOULDER RUMBLE STRIP FOOT 186

* JI642030 MOMENT SLAB RUMBLE STRIP FOOT 3,554

Addendum 6 P - 21 June 1, 2026

NO.

DESIGNATION UNIT QUANTITY

UNIT PRICE

DOLLAR

AMOUNT

DOLLAR

SCHEDULE OF PRICES

THE ILLINOIS STATE TOLL HIGHWAY AUTHORITY

CONTRACT I-20-4720

SUPREME DRIVE TO I-90

MILE POST 3.9 TO MILE POST 6.3

ROADWAY AND BRIDGE CONSTRUCTION

ELGIN O'HARE WESTERN ACCESS TOLLWAY (I-490)

* JI664390

RIGHT-OF-WAY FENCE, TYPE 1, FUSED-

BONDED VINYL COATING

FOOT 1,128

* JI664392

CORNER POST, RIGHT-OF-WAY FENCE, TYPE

1, FUSED-BONDED VINYL COATING

EACH 2

* JI664393

PULL POST, RIGHT-OF-WAY FENCE, TYPE 1,

FUSED BONDED VINYL COATING

EACH 2

* JI664394

END POST, RIGHT-OF-WAY FENCE, TYPE 1,

FUSED-BONDED VINYL COATING

EACH 1

* JI664399

DOUBLE VEHICLE GATE, RIGHT-OF-WAY

FENCE, TYPE 1, FUSED-BONDED VINYL

COATING

EACH 1

* JI669016

REGULATED SUBSTANCES MONITORING AND

FIELD SCREENING

CAL DAY 60

* JI680004 HEADWALL TYPE I, 24" EACH 1

* JI680006 HEADWALL TYPE I, 30" EACH 1

* JI680070 HEADWALL TYPE III, 36", 1:3 EACH 3

* JI680071 HEADWALL TYPE III, 42", 1:3 EACH 1

* JI680072 HEADWALL TYPE III, 48", 1:3 EACH 2

* JI680103 SLOPED HEADWALL TYPE I, 15" EACH 4

* JI680120 SLOPED HEADWALL TYPE III, 6", 1:3 EACH 1

* JI680122 SLOPED HEADWALL TYPE III, 15", 1:3 EACH 1

* JI680123 SLOPED HEADWALL TYPE III, 18", 1:3 EACH 3

* JI680125 SLOPED HEADWALL TYPE III, 24", 1:3 EACH 3

* JI680127 SLOPED HEADWALL TYPE III, 30", 1:3 EACH 1

* JI680130 SLOPED HEADWALL TYPE III, 6", 1:4 EACH 3

Addendum 6 P - 22 June 1, 2026

NO.

DESIGNATION UNIT QUANTITY

UNIT PRICE

DOLLAR

AMOUNT

DOLLAR

SCHEDULE OF PRICES

THE ILLINOIS STATE TOLL HIGHWAY AUTHORITY

CONTRACT I-20-4720

SUPREME DRIVE TO I-90

MILE POST 3.9 TO MILE POST 6.3

ROADWAY AND BRIDGE CONSTRUCTION

ELGIN O'HARE WESTERN ACCESS TOLLWAY (I-490)

* JI680135 SLOPED HEADWALL TYPE III, 24", 1:4 EACH 6

* JI680137 SLOPED HEADWALL TYPE III, 30", 1:4 EACH 1

* JI680140 SLOPED HEADWALL TYPE III, 6", 1:6 EACH 1

* JI680141 SLOPED HEADWALL TYPE III, 12", 1:6 EACH 1

* JI680220 DOUBLE SLOPED HEADWALL TYPE III, 2-6”,1:3 EACH 10

* JI680221 DOUBLE SLOPED HEADWALL TYPE III, 2-6”,1:4 EACH 8

* JI680222 DOUBLE SLOPED HEADWALL TYPE III, 2-6”,1:6 EACH 3

* JI720210 TEMPORARY SIGNING SQ FT 243

* JI811276

CONDUIT ATTACHED TO STRUCTURE, 2" DIA.,

STAINLESS STEEL

FOOT 50

* JI830030

GROUND MOUNTED LIGHT POLE, ALUMINUM,

18 FT., 6 FT. MAST ARM

EACH 5

* JI900100 CONCRETE COLLAR EACH 6

* JIA20091

TREE, ULMUS AMERICANA PRINCETON

(PRINCETON AMERICAN ELM), 1 ½” CALIPER,

BALLED AND BURLAPPED

EACH 18

** JS107360 DUST CONTROL WATERING UNIT 1,121

** JS120100

TRAILER MOUNTED FULL MATRIX PORTABLE

CHANGEABLE MESSAGE SIGNS

EACH 3

** JS120101

TRAILER MOUNTED FULL MATRIX PORTABLE

CHANGEABLE MESSAGE SIGNS

EACH/WEEK 1

** JS120102

TRAILER MOUNTED FULL MATRIX PORTABLE

CHANGEABLE MESSAGE SIGNS

EACH/MONTH 1

** JS120710 ENERGY ATTENUATOR EACH 5

** JS120715 ENERGY ATTENUATOR CONCRETE PAD SQ FT 529

Addendum 6 P - 23 June 1, 2026

NO.

DESIGNATION UNIT QUANTITY

UNIT PRICE

DOLLAR

AMOUNT

DOLLAR

SCHEDULE OF PRICES

THE ILLINOIS STATE TOLL HIGHWAY AUTHORITY

CONTRACT I-20-4720

SUPREME DRIVE TO I-90

MILE POST 3.9 TO MILE POST 6.3

ROADWAY AND BRIDGE CONSTRUCTION

ELGIN O'HARE WESTERN ACCESS TOLLWAY (I-490)

** JS213004

EXPLORATION TRENCH, UTILITIES (HAND

EXCAVATION)

FOOT 700

** JS213006

EXPLORATION TRENCH, UTILITIES (VACUUM

EXCAVATION)

FOOT 2,200

** JS280020

MANAGEMENT OF EROSION AND SEDIMENT

CONTROL

CAL MO 36

** JS280040

EROSION AND SEDIMENT CONTROL-

CLEANOUT

CU YD 34

** JS280050 SILT FENCE FOOT 19,273

** JS280051 RE-ERECT SILT FENCE FOOT 3,985

** JS280070 STABILIZED CONSTRUCTION ENTRANCE SQ YD 1,724

** JS280100 SUPER SILT FENCE FOOT 550

** JS280140 TEMPORARY RIPRAP TON 756

** JS280151 SAME-DAY STABILIZATION SQ YD 9,680

** JS280180 RECTANGULAR INLET PROTECTION EACH 11

** JS280205

FILTER FABRIC INLET PROTECTION, COVER

TYPE

EACH 73

** JS280210

FILTER FABRIC INLET PROTECTION, BASKET

TYPE

EACH 151

** JS280305 TEMPORARY DITCH CHECKS FOOT 2,390

** JS285055

ARTICULATED CONCRETE BLOCK

REVETMENT SYSTEM, TYPE 1

SQ YD 1,065

** JS452200 JOINT ROUTING ASPHALT SHOULDER FOOT 41,128

** JS452300 JOINT SEALING ASPHALT SHOULDER POUND 6,875

* JS503160

DIAMOND GRINDING AND SURFACE

SMOOTHNESS FOR BRIDGE SECTIONS

SQ YD 14,733

Addendum 6 P - 24 June 1, 2026RR

NO.

DESIGNATION UNIT QUANTITY

UNIT PRICE

DOLLAR

AMOUNT

DOLLAR

SCHEDULE OF PRICES

THE ILLINOIS STATE TOLL HIGHWAY AUTHORITY

CONTRACT I-20-4720

SUPREME DRIVE TO I-90

MILE POST 3.9 TO MILE POST 6.3

ROADWAY AND BRIDGE CONSTRUCTION

ELGIN O'HARE WESTERN ACCESS TOLLWAY (I-490)

** JS601300 PIPE UNDERDRAINS, 6" (SPECIAL) FOOT 2,146

** JS601320

PIPE UNDERDRAINS, FABRIC LINED TRENCH

6"

FOOT 27,322

** JS601325

PIPE UNDERDRAINS, FABRIC LINED TRENCH

8"

FOOT 4,362

** JS630002

GALVANIZED STEEL PLATE BEAM

GUARDRAIL, TYPE A 6 FOOT POSTS

FOOT 5,468

** JS631120 TRAFFIC BARRIER TERMINAL, TYPE T2 EACH 2

** JS631130 TRAFFIC BARRIER TERMINAL, TYPE T6 EACH 3

** JS631135 TRAFFIC BARRIER TERMINAL, TYPE T6B EACH 5

** JS631140 TRAFFIC BARRIER TERMINAL, TYPE T10 EACH 5

** JS664305 RIGHT-OF-WAY FENCE, TYPE 1, 6' FOOT 7,733

** JS664310

CORNER POST, RIGHT-OF-WAY FENCE, TYPE

EACH 8

** JS664315 PULL POST, RIGHT-OF-WAY FENCE, TYPE 1 EACH 11

** JS664320 END POST, RIGHT-OF-WAY FENCE, TYPE 1 EACH 7

** JS664335

DOUBLE VEHICLE GATE, RIGHT-OF-WAY

FENCE, TYPE 1

EACH 1

** JS670CM0 FIELD OFFICE, TYPE C (MODIFIED) CAL MO 42

* JS725000 TERMINAL MARKER - DIRECT APPLIED EACH 6

** JS733610

OVERHEAD SIGN STRUCTURE, AET RAMP

ENTRANCE MONOTUBE TYPE (STEEL)

FOOT 90

** JS671020 MOBILIZATION, TOLLWAY (MODIFIED) L SUM 1

** JS709050

TEMPORARY INFORMATION SIGNING-

GROUND MOUNT, 24 SQ FT IN AREA OR LESS

SQ FT 30

Addendum 6 P - 25 June 1, 2026R

NO.

DESIGNATION UNIT QUANTITY

UNIT PRICE

DOLLAR

AMOUNT

DOLLAR

SCHEDULE OF PRICES

THE ILLINOIS STATE TOLL HIGHWAY AUTHORITY

CONTRACT I-20-4720

SUPREME DRIVE TO I-90

MILE POST 3.9 TO MILE POST 6.3

ROADWAY AND BRIDGE CONSTRUCTION

ELGIN O'HARE WESTERN ACCESS TOLLWAY (I-490)

** JS733630

OVERHEAD SIGN STRUCTURE, AET RAMP

EXIT MONOTUBE TYPE (STEEL)

FOOT 90

** JS733710

OVERHEAD SIGN STRUCTURE, MAINLINE

ENTRANCE MONOTUBE TYPE (STEEL)

FOOT 190

** JS733750

OVERHEAD SIGN STRUCTURE, MAINLINE EXIT

MONOTUBE TYPE (STEEL)

FOOT 139

** JS734A10

FOUNDATION FOR OVERHEAD SIGN

STRUCTURE, SPAN TYPE

CU YD 907.6

** JS734B10

FOUNDATION FOR OVERHEAD SIGN

STRUCTURE, CANTILEVER TYPE

CU YD 125.4

** JS734E10

FOUNDATION FOR OVERHEAD SIGN

STRUCTURE, MAINLINE MONOTUBE TYPE

CU YD 138.8

** JS734F10

FOUNDATION FOR OVERHEAD SIGN

STRUCTURE, RAMP MONOTUBE TYPE

CU YD 83.2

* JS782014 GUARDRAIL BARRIER REFLECTORS, TYPE B EACH 73

** JS782022 BARRIER WALL REFLECTORS, TYPE C EACH 328

** JS804100 ELECTRIC SERVICE INSTALLATION EACH 4

** JS810100

UNDERGROUND CONDUIT, PVC COATED

GALVANIZED STEEL, 4” DIA.

FOOT 2,191

** JS810826

UNDERGROUND CONDUIT, GALVANIZED

STEEL, 6" DIA.

FOOT 687

** JS810835 UNDERGROUND CONDUIT, PVC, 2" DIA. FOOT 100

* JS810881

UNDERGROUND CONDUIT, COILABLE

NONMETALLIC CONDUIT, 6" DIA.

FOOT 225

** JS811051

CONDUIT ATTACHED TO STRUCTURE, 1 1/2"

DIA., PVC COATED GALVANIZED STEEL

FOOT 2,045

** JS811060

CONDUIT ATTACHED TO STRUCTURE, 2" DIA.,

PVC COATED GALVANIZED STEEL

FOOT 4,679

** JS811100

CONDUIT ATTACHED TO STRUCTURE, 4" DIA.,

PVC COATED GALVANIZED STEEL

FOOT 168

** JS811120

CONDUIT ATTACHED TO STRUCTURE, 6" DIA.,

PVC COATED GALVANIZED STEEL

FOOT 800

Addendum 6 P - 26 June 1, 2026

NO.

DESIGNATION UNIT QUANTITY

UNIT PRICE

DOLLAR

AMOUNT

DOLLAR

SCHEDULE OF PRICES

THE ILLINOIS STATE TOLL HIGHWAY AUTHORITY

CONTRACT I-20-4720

SUPREME DRIVE TO I-90

MILE POST 3.9 TO MILE POST 6.3

ROADWAY AND BRIDGE CONSTRUCTION

ELGIN O'HARE WESTERN ACCESS TOLLWAY (I-490)

** JS812023

CONDUIT EMBEDDED IN STRUCTURE, 2" DIA.,

PVC

FOOT 6,020

** JS812027

CONDUIT EMBEDDED IN STRUCTURE, 4" DIA.,

PVC

FOOT 7,036

** JS813001

JUNCTION BOX, STAINLESS STEEL,

EMBEDDED IN STRUCTURE, 20" X 12" X 8"

EACH 11

** JS813022

JUNCTION BOX, STAINLESS STEEL,

ATTACHED TO STRUCTURE, 6" X 6" X 4"

EACH 52

** JS813053

JUNCTION BOX, STAINLESS STEEL,

ATTACHED TO STRUCTURE, 12" X 10" X 6"

EACH 20

** JS813083

JUNCTION BOX, STAINLESS STEEL,

ATTACHED TO STRUCTURE, 18" X 18" X 8"

EACH 15

** JS813096

JUNCTION BOX, STAINLESS STEEL,

ATTACHED TO STRUCTURE, 30" X 24" X 12"

EACH 10

** JS814001 HANDHOLE, TOLLWAY EACH 24

** JS814002 HEAVY-DUTY HANDHOLE, TOLLWAY EACH 30

** JS816076

UNIT DUCT, WITH 4-1/C NO. 2 AND 1/C NO. 4

GROUND, 600V (XLP-TYPE USE), 2" DIA. CNC

FOOT 29,321

** JS817211

ELECTRIC CABLE IN CONDUIT, 600V (XLP-

TYPE USE) 1/C NO. 10

FOOT 13,204

** JS817212

ELECTRIC CABLE IN CONDUIT, 600V (XLP-

TYPE USE) 1/C NO. 8

FOOT 1,156

** JS817213

ELECTRIC CABLE IN CONDUIT, 600V (XLP-

TYPE USE) 1/C NO. 6

FOOT 6,222

** JS817214

ELECTRIC CABLE IN CONDUIT, 600V (XLP-

TYPE USE) 1/C NO. 4

FOOT 13,285

** JS817215

ELECTRIC CABLE IN CONDUIT, 600V (XLP-

TYPE USE) 1/C NO. 2

FOOT 52,987

** JS817216

ELECTRIC CABLE IN CONDUIT, 600V (XLP-

TYPE USE) 1/C NO. 1/0

FOOT 300

** JS821100 LUMINAIRE, LED, HORIZONTAL MOUNT EACH 79

** JS821110 UNDERPASS LUMINAIRE, LED EACH 52

Addendum 6 P - 27 June 1, 2026

NO.

DESIGNATION UNIT QUANTITY

UNIT PRICE

DOLLAR

AMOUNT

DOLLAR

SCHEDULE OF PRICES

THE ILLINOIS STATE TOLL HIGHWAY AUTHORITY

CONTRACT I-20-4720

SUPREME DRIVE TO I-90

MILE POST 3.9 TO MILE POST 6.3

ROADWAY AND BRIDGE CONSTRUCTION

ELGIN O'HARE WESTERN ACCESS TOLLWAY (I-490)

* JS821120

LUMINAIRE, LED, HORIZONTAL MOUNT,

SPECIAL

EACH 8

** JS825004 LIGHTING CONTROLLER, 200 AMPERE EACH 1

** JS825010 LIGHTING CONTROLLER. SPECIAL EACH 2

** JS828001

LIGHTING CONTROLLER FOUNDATION, TYPE

A

EACH 2

** JS830003

GROUND MOUNTED LIGHT POLE, ALUMINUM,

50 FT., 15 FT. MAST ARM

EACH 30

** JS830006

BRIDGE MOUNTED LIGHT POLE, ALUMINUM,

50 FT., 12 FT. MAST ARM

EACH 5

** JS830013

WALL MOUNTED LIGHT POLE, ALUMINUM, 50

FT., 12 FT. MAST ARM

EACH 24

** JS830015

WALL MOUNTED LIGHT POLE, ALUMINUM, 50

FT., TWO 6 FT. MAST ARMS

EACH 10

** JS830022

WALL MOUNTED LIGHT POLE, ALUMINUM, 25

FT., 12 FT. MAST ARM

EACH 4

** JS830050

GROUND MOUNTED LIGHT POLE, ALUMINUM,

25 FT., 12 FT. MAST ARM

EACH 4

** JS830051

GROUND MOUNTED LIGHT POLE, ALUMINUM,

30 FT., 15 FT. MAST ARM

EACH 19

** JS830076

WALL MOUNTED LIGHT POLE, ALUMINUM, 30

FT., TWO 6 FT. MAST ARM

EACH 10

** JS830077

WALL MOUNTED LIGHT POLE, ALUMINUM, 30

FT., 15 FT. MAST ARM

EACH 9

** JS836001

LIGHT POLE FOUNDATION (ROADWAY) STEEL

HELIX (7 FT) OR CONCRETE

EACH 67

** JS836003

LIGHT POLE FOUNDATION (ROADWAY)

CONCRETE

EACH 40

** JS836005

LIGHT POLE FOUNDATION (ROADWAY)

MEDIAN, TYPE 1

EACH 36

** JS846001 MAINTAIN LIGHTING SYSTEM L SUM 1

* JT130776 DIGITAL SURVEY QL-A FOOT 54,098

Addendum 6 P - 28 June 1, 2026

NO.

DESIGNATION UNIT QUANTITY

UNIT PRICE

DOLLAR

AMOUNT

DOLLAR

SCHEDULE OF PRICES

THE ILLINOIS STATE TOLL HIGHWAY AUTHORITY

CONTRACT I-20-4720

SUPREME DRIVE TO I-90

MILE POST 3.9 TO MILE POST 6.3

ROADWAY AND BRIDGE CONSTRUCTION

ELGIN O'HARE WESTERN ACCESS TOLLWAY (I-490)

* JT131475 SPLICE BOX AND COVER, SPECIAL EACH 1

* JT131526 PLAZA ELECTRICAL WORK L SUM 1

* JT131651

CONTROL BUILDING FOUNDATION, LOCATION

L SUM 1

* JT131652

CONTROL BUILDING FOUNDATION, LOCATION

L SUM 1

* JT131701

PRECAST CONCRETE PLAZA CONTROL

BUILDING, LOCATION 1

L SUM 1

* JT131702

PRECAST CONCRETE PLAZA CONTROL

BUILDING, LOCATION 2

L SUM 1

* JT132017 CONTROL GATE WITH PANEL EACH 1

* JT132190 PLAZA ANTENNA CABLE FOOT 3,876

* JT132740

VES CAMERA WASH SYSTEM, SINGLE

CABINET, NITROGEN GENERATOR

L SUM 1

* JT132745 DATA LOGGER CAMERA AND POLE EACH 4

* JT132822 ITS SECURITY CCTV CAMERA EACH 2

* JT132823 ITS SECURITY CCTV CAMERA, FIXED EACH 2

* JT134037

ITS ELEMENT SITE GROUNDING - POLE

MOUNTED ASSEMBLY

EACH 2

* JT134049

ITS ELEMENT SITE GROUNDING – TOLL PLAZA

BUILDING, OUTSIDE THE BUILDING

EACH 2

* JT135100 CONCRETE FILLED PIPE BOLLARDS EACH 8

* JT160006

CONDUIT FOR SINGLE MODE FIBER OPTIC

CABLE, ATTACHED TO STRUCTURE, 8" DIA,

RIGID NONMETALLIC

FOOT 1,000

* JT160099

HANDHOLE FOR SINGLE MODE FIBER OPTIC

CABLE, TORSION ASSIST, 48"X72"X36"

EACH 22

* JT160130

HANDHOLE FOR SINGLE MODE FIBER OPTIC

CABLE, 36"X60"X36"

EACH 1

* JT160132

HANDHOLE FOR SINGLE MODE FIBER OPTIC

CABLE, 48"X72"X36"

EACH 3

* JT160149

CABLE MARKER SIGN WITH POST FOR

ELECTRIC CABLE

EACH 38

Addendum 6 P - 29 June 1, 2026R

NO.

DESIGNATION UNIT QUANTITY

UNIT PRICE

DOLLAR

AMOUNT

DOLLAR

SCHEDULE OF PRICES

THE ILLINOIS STATE TOLL HIGHWAY AUTHORITY

CONTRACT I-20-4720

SUPREME DRIVE TO I-90

MILE POST 3.9 TO MILE POST 6.3

ROADWAY AND BRIDGE CONSTRUCTION

ELGIN O'HARE WESTERN ACCESS TOLLWAY (I-490)

* JT160217 LOCATE POST FOR FIBER OPTIC CABLE EACH 26

* JT160218

CABLE MARKER WARNING SIGN, WITH POST,

FOR FIBER OPTIC CABLE

EACH 33

* JT201008 CLEARING ACRE 27.25

* JT202009 NON-SPECIAL WASTE DISPOSAL, TYPE 1 CU YD 45,357

* JT202250 CONTRACTOR 3D GRADING REPORTS L SUM 1

* JT202254 CONTRACTOR FINAL GRADING REPORT L SUM 1

* JT210001 POROUS GRANULAR BACKFILL CU YD 1,179

* JT211202

PREPARED TOPSOIL FURNISH AND PLACE,

12"

SQ YD 33,696

* JT250432

SEEDING, CLASS 2E SALT TOLERANT

ROADSIDE MIX (SPECIAL)

ACRE 37.90

* JT250442

SEEDING, CLASS 4F NATIVE GRASS LOW

PROFILE MIX (SPECIAL)

ACRE 16.10

* JT250446 SEEDING, GRASS- FORB MIX 2 (SPECIAL) ACRE 13.91

* JT250454 SEEDING, TALL FESCUE MIX (SPECIAL) ACRE 22.50

* JT250610 SELECTIVE MOWING STAKES (SPECIAL) EACH 145

* JT251020 BIOSWALE EROSION CONTROL BLANKET SQ YD 593

* JT253010 WOODY PLANT SUPPLEMENTAL WATERING UNIT 5

* JT253011 WOODY PLANT CARE EACH 422

* JT253012 WOODY PLANT FERTILIZER POUND 132

* JT254019 BIOSWALE PLUGS (SPECIAL) SQ YD 593

Addendum 6 P - 30 June 1, 2026R

NO.

DESIGNATION UNIT QUANTITY

UNIT PRICE

DOLLAR

AMOUNT

DOLLAR

SCHEDULE OF PRICES

THE ILLINOIS STATE TOLL HIGHWAY AUTHORITY

CONTRACT I-20-4720

SUPREME DRIVE TO I-90

MILE POST 3.9 TO MILE POST 6.3

ROADWAY AND BRIDGE CONSTRUCTION

ELGIN O'HARE WESTERN ACCESS TOLLWAY (I-490)

* JT254200 BIOSWALE SOIL PREPARATION SQ YD 593

* JT280500 SEDIMENT FILTER BAG EACH 20

* JT280501 MAINTAIN SILT FENCE FOOT 1,032

* JT301020 POROUS GRANULAR SUBBASE CU YD 35,819

* JT311040

AGGREGATE SUBGRADE IMPROVEMENT ,

SPECIAL

CU YD 7,993

* JT420166

PERFORMANCE RELATED PORTLAND

CEMENT CONCRETE PAVEMENT, JOINTED -

10"

SQ YD 58,075

* JT420300

DIAMOND GRINDING FOR CONTINUOUSLY

REINFORCED PORTLAND CEMENT

CONCRETE PAVEMENT AND SHOULDER

SQ YD 1,928

* JT421391

CONTINUOUSLY REINFORCED PORTLAND

CEMENT CONCRETE PAVEMENT AND

SHOULDER (SPECIAL)(13.25 IN.)

SQ YD 600

* JT421397

CONTINUOUSLY REINFORCED PORTLAND

CEMENT CONCRETE PAVEMENT AND

SHOULDER (SPECIAL)(14.25 IN.)

SQ YD 1,000

* JT421510 SLEEPER SLAB SQ YD 537

* JT421971 PAVEMENT REINFORCEMENT (13.25 IN.) SQ YD 600

* JT421976 PAVEMENT REINFORCEMENT (14.25 IN.) SQ YD 1,000

* JT501729 PROTECTIVE SHIELD SQ YD 10,033

* JT512010 PILE SPLICE EACH 194

* JT512320 PILE PRECORING FOOT 1,967

* JT512325 PILE SLEEVE, 24” FOOT 2,957

* JT512330 PILE SLEEVE, 30” FOOT 5,013

* JT525125 BONDED PREFORMED JOINT SEAL, 2 IN. FOOT 148

Addendum 6 P - 31 June 1, 2026RR

NO.

DESIGNATION UNIT QUANTITY

UNIT PRICE

DOLLAR

AMOUNT

DOLLAR

SCHEDULE OF PRICES

TH…