Ten Park Plaza, Suite 4160, Boston, MA 02116 Tel: 857-368-4636, TTY: 857-368-0655 www.mass.gov/massdot

Proposal No. 611940-136645 October 1, 2026

ADDENDUM NO. 1

To Prospective Bidders and Others on:

SOMERVILLE

Federal Aid Project No. HIP(NGB)-003S(987)X

Bridge Replacement, S-17-016 (3GF), Webster Avenue over MBTA and BMRR

THIS PROPOSAL TO BE OPENED AND READ: TUESDAY, OCTOBER 6, 2026 at 2:00 P.M.

Transmitting changes to the Contract Documents as follows:

QUESTIONS AND RESPONSES: One page.

DOCUMENT 00010: Revised page 2.

DOCUMENT A00825: Inserted new document (10 pages).

DOCUMENT B00420: Revised pages 4 through 20.

Take note of the above, substitute the revised pages for the originals, insert the new document in the proper order, and acknowledge Addendum No. 1 in your Expedite Proposal file before submitting your bid.

Very truly yours, Eric M. Cardone, P.E.

Construction Contracts Engineer

EMC/mac cc Alwin Ramirez, Project Manager

THIS PAGE INTENTIONALLY LEFT BLANK

Proposal No. 611940-136645

SOMERVILLE

Federal Aid Project No. HIP(NGB)-003S(987)X

Bridge Replacement, S-17-016 (3GF), Webster Avenue over MBTA and BMRR

Questions and Responses Addendum No. 1, October 1, 2026

MAS Building & Bridge, Inc., email dated Wednesday, September 30, 2026

Question 1) Please confirm whether Task 2A listed in the PUC Form – “Eversource Electric –

Cut and Cap 2-13.8 kV Lines and R&R 3x3 Lighting, UP R&R, and 2 – Light Poles R&R” – for the Prospect Street Bridge has already been completed.

If not, please provide a date for when this work is expected to be completed.

Response 1) This response will be provided in a future addendum.

Question 2) Please confirm whether Task 5A – Eversource Gas: Isolate & Abandon Existing

12” CI Main on the Bridge can be performed independently of Task 5B – 2” Winter Bypass, regardless of whether the winter bypass has been installed. Our understanding is that the 2” winter bypass must be installed and in service from October 1 through April 30. Please confirm.

Response 2) This response will be provided in a future addendum.

Question 3) Please confirm the number and size of conduits, as well as the cable information, for the Somerville Fire Alarm Cable under Task 3A of the PUC Form.

Response 3) This response will be provided in a future addendum.

Question 4) Please provide the model, type, color, and lumen output for the luminaire associated with Item 821.01 – Light Pole Complete.

Response 4) This response will be provided in a future addendum.

Massachusetts Department Of Transportation Highway Division

00010 - 2

TABLE OF CONTENTS (Continued)

DOCUMENT 00870

STANDARD FEDERAL EQUAL EMPLOYMENT OPPORTUNITY

CONSTRUCTION CONTRACT SPECIFICATIONS .............................................................. 00870-1 through 8

DOCUMENT 00880

MINIMUM WAGES FOR FEDERAL AND FEDERALLY

ASSISTED CONTRACTS ......................................................................................................... 00880-1 through 6

DOCUMENT A00801

SPECIAL PROVISIONS .................................................................................................... A00801-1 through 204

DOCUMENT A00802

DETAIL SHEETS ................................................................................................................. A00802-1 through 22

DOCUMENT A00808

PROJECT UTILITY COORDINATION FORM .................................................................... A00808-1 through 8

DOCUMENT A00811

WATERING LOG FOR MASSDOT PLANTINGS ............................................................... A00811-1 through 2

DOCUMENT A00812

MASSACHUSETTS BAY TRANSPORTATION AUTHORITY

FLAGGING REQUEST FORM ............................................................................................. A00812-1 through 4

DOCUMENT A00813

MASSACHUSETTS BAY TRANSPORTATION AUTHORITY

SPECIAL INSTRUCTIONS ................................................................................................. A00813-1 through 16

DOCUMENT A00814

MASSACHUSETTS BAY TRANSPORTATION AUTHORITY

CONSTRUCTION SAFETY ................................................................................................ A00814-1 through 14

DOCUMENT A00815

MASSACHUSETTS BAY TRANSPORTATION AUTHORITY

RAILROAD OPERATIONS DIRECTORATE .................................................................. A00815-1 through 134

DOCUMENT A00820

REQUEST FOR RELEASE OF MASSDOT AUTOCAD FILES FORM .............................. A00820-1 through 2

① DOCUMENT A00825

MWRA 8M PERMIT ............................................................................................................ A00825-1 through 10

DOCUMENT A00844

US FISH AND WILDLIFE SERVICE

NLAA CONCURRENCE VERIFICATION LETTER ......................................................... A00844-1 through 12

DOCUMENT A00875

POLICY DIRECTIVE P-22-001 AND POLICY DIRECTIVE P-22-002 .............................. A00875-1 through 8

DOCUMENT B00420

PROPOSAL............................................................................................................................ B00420-1 through 20

*** END OF DOCUMENT ***

① Addendum No. 1, October 1, 2026

Addendum No. 1, October 1, 2026

A00825 - 1

DOCUMENT A00825

MWRA 8M PERMIT

Addendum No. 1, October 1, 2026

A00825 - 2

MASSACHUSETTS WATER RESOURCES AUTHORITY

PERMIT

20-Feb-26

Mass DOT (Project File #611940)

10 Park Plaza

Boston, MA 02166

Pursuant to Section 8 (m) of Chapter 372 of the Acts of 1984 you are hereby granted permission to use a certain portion of land presently under the jurisdiction and control of the Massachusetts

Water Resources Authority for the purpose set forth below.

The land is described as follows:

Section 4, Low Service Pipe Line - Webster Avenue (Newton St) - Somerville, Massachusetts

You may use the land for the purpose of:

Replacement of Bridge Deck and Roadway Full Depth Work in Accordance with Plans Titled:

Mass DOT Project File No. 611940 Webster Avenue Over MBTA BMRR Bridge No. S17016

(ATX) - Webster Avenue (Newton St) in Somerville, Massachusetts - Prepared by CHA - Date:

1/20/2026

8(m) Permit #3668

Proposal No. 611940-136645 Addendum No. 1, October 1, 2026

A00825 - 3

Approved as to Form: Approved

Massachusetts Water Resources Authority Massachusetts Water Resources Authority

Law Division Deputy Chief OO, PP&P

This Permit is subject to the 8(m) Permit Terms and Conditions, and the 8(m) Permit

Special Terms and Conditions, if any, attached hereto and made a part hereof. Permittee agrees that it shall be bound by, and shall comply with, said Terms and Conditions.

Permittee: ____________________________ / __Michael O'Dowd, MassDOT

Signature Print Name

This Permit shall have no effect until such time as the Authority issues the fully executed original of this Permit.

Massachusetts Water Resources Authority

2 Griffin Way

Chelsea, MA 02150

Attn: Water Operations - Permitting Department

8(m) 26-3668

February 20, 2026

A00825 - 4

8(m) PERMIT TERMS AND CONDITIONS

1. Permittee shall be responsible to stay apprised of and comply with all applicable federal, state and local laws, rules, and orders including, but not limited to, guidelines and requirements for construction sites, and all supplements, amendments and/or changes thereto and notices thereof.

Prior to commencing work pursuant to this Permit, Permittee shall have obtained all other required permits, written approval(s) and necessary authorizations to perform the work. Failure to comply with the terms stated herein shall render this Permit null and void by the Authority, and Permittee shall bear all responsibility, liability, damages and costs arising from the Permittee’s noncompliance.

2. Permittee’s use of the permitted land shall at no time interfere with the Authority’s activities or operations on the permitted land. The Authority has the right to review and approve all of the Permittee’s work including such plans and specifications, as the Authority deems necessary. Any proposed future work beyond the scope of this Permit shall have the prior written approval of the Authority.

3. To the fullest extent permitted by law, the Permittee shall indemnify, defend with counsel acceptable to the Authority, keep and save harmless the Authority and its board members, officers, representatives, contractors, agents, employees, successors, and assigns, in both their individual and official capacities, against all suits, claims, liabilities, damages, losses (including but not limited to loss of use resulting therefrom) and expenses, including but not limited to attorney's fees, caused by, arising out of or resulting from any work or activity under this Permit and/or act, omission, breach or default of the Permittee or of any contractor, subcontractor of vendor of the Permittee or anyone directly or indirectly employed by any of them or anyone for whose acts any of them may be liable, regardless of whether or not it is caused in part by a party indemnified hereunder.

4. The granting of this Permit shall in no way interfere with the rights of the Authority to exercise its existing rights in or over the permitted land. Permittee acknowledges that the Authority, within its sole discretion, may enter upon the permitted land at any time in order to carry out inspections, maintenance, repairs, replacements, or other activities.

5. The Authority may revoke this Permit at any time. The sale or disposition of the permitted land by its owner will cause this Permit to terminate without further notice. Permittee shall give the Authority at least 72 hours notice before commencing the operations as pursuant herein. This Permit shall not be assigned or transferred.

6. No blasting, drilling or other activity that could in any way affect the integrity or operability of the Authority’s property or use of the permitted land shall be permitted without express prior written approval of the Authority.

7. The Permittee shall remove, at its own expense, within six months of the date of written notice from the Authority, any or all conduits and appurtenances installed by the Permittee under this Permit if, in the Authority’s sole discretion, such removal is necessary for the operation, maintenance or replacement of the Authority’s infrastructure.

8. To the fullest extent permitted by law, and in consideration of the issuance of this Permit, Permittee hereby releases the Authority and its board members, officers, representatives, contractors, agents, employees, successors, and assigns, in both their individual and official capacities, from all suits, claims, liabilities, damages, losses (including but not limited to loss of use resulting therefrom) and expenses, including but not limited to attorney's fees, caused by, arising out of or resulting from any work or activity under this Permit and/or act, omission, breach or default of the Permittee or of any

A00825 - 5 contractor, subcontractor of vendor of the Permittee or anyone directly or indirectly employed by any of them or anyone for whose acts any of them may be liable, regardless of whether or not it is caused in part by a party indemnified hereunder. This release includes, but is not limited to, all suits, claims, liabilities, damages (including, but not limited to, direct, indirect, and consequential damages, economic loss, and loss of profits) and losses which are attributable to bodily injury, sickness, disease or death, or to injury to or destruction of tangible property, including the loss of use resulting therefrom, together with all attorneys’ fees, costs and expenses.

9. The Permittee shall conduct design, construction, and excavation in accordance with all federal, state and local safety regulations, including but not limited to, federal OSHA regulations (29 CFR 1926) and Massachusetts Department of Public Safety regulations (520 CMR 14.00). During construction, Permittee shall take appropriate sheeting and shoring measures to protect the integrity of the Authority’s water and/or sewer mains. Permittee shall submit design plans stamped by a professional engineer licensed in Massachusetts to the Authority for approval prior to the start of construction.

10. The Permittee shall adjust any or all Authority frames and covers to grade within the limits of work in accordance with the plans referenced in this Permit. The Authority will provide the Permittee with new replacement Authority frames and covers that have been deemed unusable by the Authority.

11. If the Permittee is proposing to take borings and/or place test pits within the permitted land, the Permittee shall mark the proposed boring and test pit locations on the ground using paint and/or stakes and submit engineering documents to the Authority showing the proposed boring and test pit locations. Authority staff will review all boring and test pit locations at the site. Upon written clearance of the proposed boring and test pit locations by Authority staff and subject to Permittee providing the Authority with seventy-two (72) hours prior notice, Permittee may commence work at the site.

The Permittee shall be responsible for the locations of proposed borings and test pits regardless of any act or omission of the Authority. The Permittee shall be responsible for repairing and/or replacing, at the Authority’s election, the Authority’s property or infrastructure, which is damaged as a result of the Permittee’s, its contractors, agents, representatives, employees, and/or invitees activities pursuant to this Permit. The Permittee’s obligations under this paragraph shall include payment to the Authority for all costs to repair all such damage caused to the Authority’s property.

A00825 - 6

EXHIBIT A

MWRA WATER OPERATIONS SPECIAL TERMS AND CONDITIONS

1. Prior to entry, Permittee or its designee shall provide at least seventy two (72) -hours prior notice to the MWRA’s Inspection Department, by calling (617) 305-5833, located at 2 Griffin Way, Chelsea, MA 02150.

2. A minimum vertical clearance of eighteen (18) inches shall be maintained between the

MWRA’s water mains and other utility crossings unless otherwise noted. However, water/gas and other utility service crossings with a pipe size diameter of two (2) inches or less maybe permitted to cross above the MWRA’s pipeline at a reduced clearance subject to MWRA’s review. (Except for special provisions, i.e. capped or plugged pipes, thrust blocks and or bends, which would require a greater clearance and separation).

3. A minimum of three (3) feet to five (5) feet horizontal clearance is required between adjacent utilities and the side (spring line) of any MWRA water main. (Except for special provisions, i.e. capped or plugged pipes, thrust blocks, and/or pipe bends, which would require a greater clearance separation).

4. Crossings of MWRA water mains shall be located a minimum horizontal distance of at least four (4) feet from any joints of the MWRA’s water mains.

5. Proposed pipe/utility crossings of the MWRA’s water mains shall cross at a ninety (90) degree angle to minimize interference.

6. For distances over four (4) feet of the MWRA’s water mains, which are to be undermined, the method and type of pipe support plan shall be submitted and stamped by a Professional Engineer (P.E.) licensed in Massachusetts for prior approval by the MWRA.

7. For distances under four (4) feet from the MWRA’s water mains, which are to be undermined, the on-site MWRA inspector shall review and approve the proposed support of the water main. Under no circumstances shall the MWRA’s water main be left in an unsupported, undermined position overnight.

8. During construction, appropriate sheeting measures must be taken to protect the integrity of the MWRA’s water mains. The sheeting design must be reviewed by the MWRA prior to the start of the construction. The design shall be stamped by a Professional Engineer, licensed in Massachusetts. The use of a Trench Box is not permitted in this application.

9. Suitable compaction methods shall be employed in restoring the beds of the MWRA’s water mains and backfilling around the MWRA’s water mains shall be placed in maximum six (6) inch lifts and compacted by hand vibratory compactors.

10. The MWRA’s water mains shall be protected at all times during construction. The MWRA may require a professional engineer licensed in the State of Massachusetts to submit a construction plan and or pipeline analysis that is to be attached to this Permit.

11. Screened gravel shall be uniformly graded with maximum size of a particle between 3/8 inch and 3/4 inch. Screened gravel shall consist of clean, hard and durable particles free from an excess of soft, elongated and disintegrated pieces or other objectionable material.

A00825 - 7

Crushed rock of suitable size and grading maybe used in place of screened gravel at the option of the MWRA Inspector.

12. For test pit excavations or unearthing of the MWRA’s water mains the Permittee shall excavate the last two (2) feet, before the top of pipe, by hand or use a vacuum boring method and backfill with approved material within an fee interest, easement or roadway area.

13. The Permittee is responsible to adjust any or all MWRA frames and covers to grade within their limits of work in accordance with the plans referenced in this Permit.

The MWRA will provide the Permittee with new replacement MWRA frames and covers (at no expense to the Permittee) for any existing frames and covers that have been deemed unusable by MWRA personnel.

14. All MWRA manhole openings that were covered during the binder course installation shall be made accessible within forty eight (48) hours. MWRA manhole frame and covers shall not be removed for grinding and or pulverizing. Pulverizing is not allowed over MWRA manhole structures.

15. The Permittee shall provide a logistics construction schedule in writing, along with emergency contact information whenever MWRA valves (manhole covers) or facilities are covered or obstructed.

16. MWRA Inspection personnel must be on site whenever excavation, construction, hoisting or rigging occurs around an MWRA water main.

17. No construction equipment including cranes, backhoes, or material may be parked, stationed, set up, or stored on top of the MWRA's water mains or infrastructure.

18. Replacement (shutdown) of the MWRA’s water mains shall be coordinated with the

MWRA. Four (4) weeks-advanced notice in writing is required for shutdowns.

19. The Permittee or its designee shall contact the MWRA three (3) weeks in advance of when an MWRA water main valve must be operated. Only MWRA personnel will operate MWRA valves. The Permittee or its designee shall not operate any MWRA water main valves. MWRA Valve Operations are limited during peak demand periods and may not be available between the dates of May 15th and September 15th of each calendar year.

20. The Permittee will be responsible to protect and correct any damage(s) to the MWRA’s property, water main pipelines and/or any related infrastructure at no cost to the MWRA.

21. As-built drawings shall be furnished to the MWRA upon the completion of the work authorized by this Permit. A Professional Massachusetts Registered Land Surveyor or Engineer shall stamp as-built drawings.

22. MWRA Detail Records “field sketches” shall be updated (with accurate field ties) by the Permittee and shall be furnished to the MWRA upon the completion of the work authorized by this Permit.

23. The Permittee understands and agrees that the MWRA and its successors and assigns are not responsible for any damage and/or claims for damages to the Permittee’s structures, conduits, facilities and/or property permitted pursuant to this permit as a result of the

A00825 - 8

MWRA’s operation, maintenance, repair, and/or replacement of MWRA’s infrastructure, or as a result of the failure of an MWRA water main, and that the Permittee shall be solely responsible for replacing and/or repairing said structures and for any costs related thereto, as a result of MWRA’s activities, including but not limited to, the operation, maintenance, repair, and/or replacement of MWRA’s infrastructure, or as a result of the failure of an MWRA water main. Further, the Permittee shall hold the MWRA and its successors and assigns harmless from any damages and/or claims for damage to the Permittee’s structures, conduits, facilities and/or property permitted pursuant to this permit as a result of the MWRA’s operation, maintenance, repair, and/or replacement of MWRA property, or as a result of the failure of an MWRA water main.

24. This Permit addresses only MWRA-owned and operated infrastructure. The Permittee is required to obtain all needed separate approvals from Cities, Towns, State Agencies or other entities.

25. The work authorized by this Permit and location of installed facilities and appurtenances shall not deviate from the construction plan that is referenced in this Permit. No field changes are allowed without prior review and written approval by the MWRA 8(m) Permit Project Manager. An MWRA on-site inspector shall review all field changes and coordinate with the Permittee regarding submitting a change of work plan to the MWRA for review and comment. If MWRA field inspection indicates changes undertaken without approval, the Permittee may be issued a cease and desist order and be required to correct/reconstruct any completed work.

26. The MWRA requires a construction plan along with an analysis of the MWRA’s water main pipeline (prepared by a professional engineer licensed in the State of Massachusetts). The pipeline analysis shall take into consideration the construction equipment, which would be used over the MWRA’s water main pipeline in instances where the existing roadway surface will be completely excavated away removing the protection of the HS-20 surface loading barrier. This Plan and supporting calculations will need to be submitted to the MWRA for review. This includes open cross-country areas where no HS 20 Roadway Loading exists.

27. The MWRA requires the submittal of “Cut Sheets and or Shop Drawings” for review of all newly proposed materials that will come under the ownership of the MWRA.

28. Where pipe jacking is required for work that is in close proximity to the MWRA’s water mains, submittals prepared by a professional engineer and reviewed by the MWRA are required.

29. Permittee shall not expose the spring line or undermine the MWRA’s water main pipeline. The Permittee or its designee shall cease excavation operations and secure the open trench by backfilling the open trench to secure the MWRA’s water main pipeline whenever the spring line is expose

30. In instances where the layout of the MWRA water mains are to be accurate and precise beyond the MWRA’s regular mark out services the Permittee, at the direction of the MWRA, shall have a professional land surveyor licensed in Massachusetts mark out MWRA water mains using field survey instruments.

31. Disinfection of MWRA pipelines includes the entire isolated length of MWRA’s pipeline(s). Disinfection is the responsibility of the applicant including independent lab testing procedures in accordance with MWRA standards.

A00825 - 9

A00825 - 10

Project # 611940 Contract # 136645

Location : SOMERVILLE

Description : Bridge Replacement, S-17-016 (3GF), Webster Avenue over MBTA and BMRR

ITEM # QUANTITY ITEM WITH UNIT BID PRICE

WRITTEN IN WORDS

UNIT PRICE AMOUNT

127.1 500 REINFORCED CONCRETE EXCAVATION

AT _________________________

PER CUBIC YARD

140. 1,160 BRIDGE EXCAVATION

AT _________________________

PER CUBIC YARD

141.1 360 TEST PIT FOR EXPLORATION

AT _________________________

PER CUBIC YARD

142. 60 CLASS B TRENCH EXCAVATION

AT _________________________

PER CUBIC YARD

144. 20 CLASS B ROCK EXCAVATION

AT _________________________

PER CUBIC YARD

151. 780 GRAVEL BORROW

AT _________________________

PER CUBIC YARD

151.2 195 GRAVEL BORROW FOR BACKFILLING STRUCTURES AND

PIPES

AT _________________________

PER CUBIC YARD

156. 5 CRUSHED STONE

AT _________________________

PER TON

160.3 2 CONTROLLED LOW-STRENGTH MATERIAL (> 300 PSI)

AT _________________________

PER CUBIC YARD

CMS104 - Report Run Date: 10/1/2026 6:44 AM Page 3

① Addendum No. 1, October 1, 2026

①

B00420 - 4

Description : Bridge Replacement, S-17-016 (3GF), Webster Avenue over MBTA and BMRR

ITEM # QUANTITY ITEM WITH UNIT BID PRICE

WRITTEN IN WORDS

UNIT PRICE AMOUNT

170. 3,200 FINE GRADING AND COMPACTING - SUBGRADE AREA

AT _________________________

PER SQUARE YARD

180.01 1 ENVIRONMENTAL HEALTH AND SAFETY PROGRAM

AT _________________________

LUMP SUM

180.02 160 PERSONAL PROTECTION LEVEL C UPGRADE

AT _________________________

PER HOUR

180.03 160 LICENSED SITE PROFESSIONAL SERVICES

AT _________________________

PER HOUR

181.11 2,100 DISPOSAL OF UNREGULATED SOIL

AT _________________________

PER TON

181.12 400 DISPOSAL OF REGULATED SOIL - IN-STATE FACILITY

AT _________________________

PER TON

181.13 400 DISPOSAL OF REGULATED SOIL - OUT-OF-STATE FACILITY

AT _________________________

PER TON

181.14 150 DISPOSAL OF HAZARDOUS WASTE

AT _________________________

PER TON

182.1 1 INSPECTION AND TESTING FOR ASBESTOS

AT _________________________

LUMP SUM

CMS104 - Report Run Date: 10/1/2026 6:44 AM Page 4

Addendum No. 1, October 1, 2026

B00420 - 5

Description : Bridge Replacement, S-17-016 (3GF), Webster Avenue over MBTA and BMRR

ITEM # QUANTITY ITEM WITH UNIT BID PRICE

WRITTEN IN WORDS

UNIT PRICE AMOUNT

182.2 500 REMOVAL OF ASBESTOS

AT _________________________

PER FOOT

184.1 4 DISPOSAL OF TREATED WOOD PRODUCTS

AT _________________________

PER TON

188.2 1 DISPOSAL OF PCB BALLASTS

AT _________________________

LUMP SUM

201. 1 CATCH BASIN

AT _________________________

EACH

202. 1 MANHOLE

AT _________________________

EACH

204. 3 GUTTER INLET

AT _________________________

EACH

211. 1 SPECIAL SANITARY SEWER MANHOLE

AT _________________________

EACH

220. 5 DRAINAGE STRUCTURE ADJUSTED

AT _________________________

EACH

220.6 2 SANITARY STRUCTURE REBUILT

AT _________________________

PER FOOT

CMS104 - Report Run Date: 10/1/2026 6:44 AM Page 5

Addendum No. 1, October 1, 2026

B00420 - 6

Description : Bridge Replacement, S-17-016 (3GF), Webster Avenue over MBTA and BMRR

ITEM # QUANTITY ITEM WITH UNIT BID PRICE

WRITTEN IN WORDS

UNIT PRICE AMOUNT

220.7 7 SANITARY STRUCTURE ADJUSTED

AT _________________________

EACH

220.8 4 SANITARY STRUCTURE REMODELED

AT _________________________

EACH

222.3 7 FRAME AND GRATE (OR COVER) MUNICIPAL STANDARD

AT _________________________

EACH

223.2 3 FRAME AND GRATE (OR COVER) REMOVED AND

DISCARDED

AT _________________________

EACH

227.3 5 REMOVAL OF DRAINAGE STRUCTURE SEDIMENT

AT _________________________

PER CUBIC YARD

227.31 50 REMOVAL OF DRAINAGE PIPE SEDIMENT

AT _________________________

PER FOOT

230.1 1,240 PRE AND POST CONSTRUCTION INSPECTION OF SEWER

AT _________________________

PER FOOT

238.12 80 12 INCH DUCTILE IRON PIPE

AT _________________________

PER FOOT

241.12 70 12 INCH REINFORCED CONCRETE PIPE CLASS III

AT _________________________

PER FOOT

CMS104 - Report Run Date: 10/1/2026 6:44 AM Page 6

① Addendum No. 1, October 1, 2026

①

B00420 - 7

Description : Bridge Replacement, S-17-016 (3GF), Webster Avenue over MBTA and BMRR

ITEM # QUANTITY ITEM WITH UNIT BID PRICE

WRITTEN IN WORDS

UNIT PRICE AMOUNT

303.12 140 12 INCH DUCTILE IRON WATER PIPE (MECHANICAL JOINT)

AT _________________________

PER FOOT

309. 900 DUCTILE IRON FITTINGS FOR WATER PIPE

AT _________________________

PER POUND

350.12 2 12 INCH GATE AND GATE BOX

AT _________________________

EACH

358. 15 GATE BOX ADJUSTED

AT _________________________

EACH

371.12 2 12 INCH COUPLING

AT _________________________

EACH

376. 2 HYDRANT

AT _________________________

EACH

402. 180 DENSE GRADED CRUSHED STONE FOR SUB-BASE

AT _________________________

PER CUBIC YARD

415.3 1,400 PAVEMENT MICRO MILLING

AT _________________________

PER SQUARE YARD

443. 8 WATER FOR ROADWAY DUST CONTROL

AT _________________________

PER 1000 GALLONS

CMS104 - Report Run Date: 10/1/2026 6:44 AM Page 7

Addendum No. 1, October 1, 2026

B00420 - 8

Description : Bridge Replacement, S-17-016 (3GF), Webster Avenue over MBTA and BMRR

ITEM # QUANTITY ITEM WITH UNIT BID PRICE

WRITTEN IN WORDS

UNIT PRICE AMOUNT

450.31 230 SUPERPAVE INTERMEDIATE COURSE - 12.5 (SIC -12.5)

AT _________________________

PER TON

450.42 410 SUPERPAVE BASE COURSE - 37.5 (SBC - 37.5)

AT _________________________

PER TON

450.601 231 SUPERPAVE BRIDGE SURFACE COURSE - 9.5 POLYMER

(SSC-B - 9.5 - P)

AT _________________________

PER TON

450.701 21 SUPERPAVE BRIDGE PROTECTIVE COURSE - 9.5 POLYMER

(SPC-B - 9.5 - P)

AT _________________________

PER TON

451. 10 HMA FOR PATCHING

AT _________________________

PER TON

452. 370 ASPHALT EMULSION FOR TACK COAT

AT _________________________

PER GALLON

453. 2,550 HMA JOINT ADHESIVE

AT _________________________

PER FOOT

458.71 145 LIGHTWEIGHT FOAMED GLASS AGGREGATE

AT _________________________

PER CUBIC YARD

472. 10 TEMPORARY ASPHALT PATCHING

AT _________________________

PER TON

CMS104 - Report Run Date: 10/1/2026 6:44 AM Page 8

Addendum No. 1, October 1, 2026

B00420 - 9

Description : Bridge Replacement, S-17-016 (3GF), Webster Avenue over MBTA and BMRR

ITEM # QUANTITY ITEM WITH UNIT BID PRICE

WRITTEN IN WORDS

UNIT PRICE AMOUNT

504. 280 GRANITE CURB TYPE VA4 - STRAIGHT

AT _________________________

PER FOOT

504.1 295 GRANITE CURB TYPE VA4 - CURVED

AT _________________________

PER FOOT

504.2 2 GRANITE CURB TYPE VA4 - SPLAYED END

AT _________________________

EACH

509. 60 GRANITE TRANSITION CURB FOR PEDESTRIAN CURB

RAMPS - STRAIGHT

AT _________________________

PER FOOT

509.1 10 GRANITE TRANSITION CURB FOR PEDESTRIAN CURB

RAMPS - CURVED

AT _________________________

PER FOOT

514. 2 GRANITE CURB INLET - STRAIGHT

AT _________________________

EACH

516. 9 GRANITE CURB CORNER TYPE A

AT _________________________

EACH

580. 670 CURB REMOVED AND RESET

AT _________________________

PER FOOT

594. 370 CURB REMOVED AND DISCARDED

AT _________________________

PER FOOT

CMS104 - Report Run Date: 10/1/2026 6:44 AM Page 9

Addendum No. 1, October 1, 2026

B00420 - 10

Description : Bridge Replacement, S-17-016 (3GF), Webster Avenue over MBTA and BMRR

ITEM # QUANTITY ITEM WITH UNIT BID PRICE

WRITTEN IN WORDS

UNIT PRICE AMOUNT

620.12 75 GUARDRAIL, TL-2 (SINGLE FACED)

AT _________________________

PER FOOT

627.1 1 TRAILING ANCHORAGE

AT _________________________

EACH

627.82 3 GUARDRAIL TANGENT END TREATMENT, TL-2

AT _________________________

EACH

628.24 2 TRANSITION TO BRIDGE RAIL

AT _________________________

EACH

628.312 1 PERMANENT IMPACT ATTENUATOR, REDIRECTIVE, TL-2

AT _________________________

EACH

630.2 240 HIGHWAY GUARD REMOVED AND DISCARDED

AT _________________________

PER FOOT

644.172 40 72 INCH CHAIN LINK FENCE (SPRING TENSION WIRE) VINYL

COATED (LINE POST OPTION)

AT _________________________

PER FOOT

644.196 200 96 INCH CHAIN LINK FENCE (SPRING TENSION WIRE) VINYL

COATED (LINE POST OPTION)

AT _________________________

PER FOOT

645.048 170 48 INCH CHAIN LINK FENCE (PIPE TOP RAIL) (LINE POST

OPTION)

AT _________________________

PER FOOT

CMS104 - Report Run Date: 10/1/2026 6:44 AM Page 10

Addendum No. 1, October 1, 2026

B00420 - 11

Description : Bridge Replacement, S-17-016 (3GF), Webster Avenue over MBTA and BMRR

ITEM # QUANTITY ITEM WITH UNIT BID PRICE

WRITTEN IN WORDS

UNIT PRICE AMOUNT

650.048 20 48 INCH CHAIN LINK GATE WITH GATE POSTS

AT _________________________

PER FOOT

657. 350 TEMPORARY FENCE

AT _________________________

PER FOOT

669.1 600 FENCE REMOVED AND DISCARDED

AT _________________________

PER FOOT

669.2 3 FENCE GATE REMOVED AND DISCARDED

AT _________________________

EACH

697.1 11 SILT SACK

AT _________________________

EACH

698.3 80 GEOTEXTILE FABRIC FOR SEPARATION

AT _________________________

PER SQUARE YARD

701. 600 CEMENT CONCRETE SIDEWALK

AT _________________________

PER SQUARE YARD

701.1 150 CEMENT CONCRETE SIDEWALK AT DRIVEWAYS

AT _________________________

PER SQUARE YARD

701.2 80 CEMENT CONCRETE PEDESTRIAN CURB RAMP

AT _________________________

PER SQUARE YARD

CMS104 - Report Run Date: 10/1/2026 6:44 AM Page 11

Addendum No. 1, October 1, 2026

B00420 - 12

Description : Bridge Replacement, S-17-016 (3GF), Webster Avenue over MBTA and BMRR

ITEM # QUANTITY ITEM WITH UNIT BID PRICE

WRITTEN IN WORDS

UNIT PRICE AMOUNT

701.22 180 DETECTABLE GUIDE STRIP

AT _________________________

PER FOOT

702. 120 HOT MIX ASPHALT SIDEWALK OR DRIVEWAY

AT _________________________

PER TON

722.1 1 SCHEDULE OF OPERATIONS (TYPE A) - FIXED PRICE

$82,500

AT Eighty Two Thousand Five Hundred Dollars

LUMP SUM

$82,500.00 $82,500.00

740. 32 ENGINEER'S FIELD OFFICE AND EQUIPMENT (TYPE A)

AT _________________________

PER MONTH

748. 1 MOBILIZATION

AT _________________________

LUMP SUM

751.1 280 LOAM FOR LAWNS

AT _________________________

PER CUBIC YARD

765. 200 SEEDING

AT _________________________

PER SQUARE YARD

765.415 1 NATIVE SHORT GRASSLAND MIX

AT _________________________

PER POUND

765.635 200 NATIVE SEEDING AND ESTABLISHMENT

AT _________________________

PER SQUARE YARD

CMS104 - Report Run Date: 10/1/2026 6:44 AM Page 12

①

① Addendum No. 1, October 1, 2026

①

B00420 - 13

Description : Bridge Replacement, S-17-016 (3GF), Webster Avenue over MBTA and BMRR

ITEM # QUANTITY ITEM WITH UNIT BID PRICE

WRITTEN IN WORDS

UNIT PRICE AMOUNT

767.121 200 SEDIMENT CONTROL BARRIER

AT _________________________

PER FOOT

769. 100 PAVEMENT MILLING MULCH UNDER GUARD RAIL

AT _________________________

PER FOOT

804.3 20 3 INCH ELECTRICAL CONDUIT TYPE NM - PLASTIC -(UL)

AT _________________________

PER FOOT

804.4 160 4 INCH ELECTRICAL CONDUIT TYPE NM - PLASTIC -(UL)

AT _________________________

PER FOOT

805.41 90 4 INCH TELEPHONE CONDUIT TYPE NM (6 BANK - FRE)

AT _________________________

PER FOOT

805.51 180 5 INCH ELECTRICAL CONDUIT TYPE NM - FIBERGLASS

AT _________________________

PER FOOT

810.1 80 5 INCH UNDERGROUND CONCRETE ENCASED CONDUIT

(EVERSOURCE) (9 BANK)

AT _________________________

PER FOOT

810.2 160 4 INCH UNDERGROUND CONCRETE ENCASED CONDUIT

(VERIZON) (6 BANK)

AT _________________________

PER FOOT

810.3 110 5 INCH UNDERGROUND CONCRETE ENCASED CONDUIT

(EVERSOURCE) (6 BANK)

AT _________________________

PER FOOT

CMS104 - Report Run Date: 10/1/2026 6:44 AM Page 13

Addendum No. 1, October 1, 2026

B00420 - 14

Description : Bridge Replacement, S-17-016 (3GF), Webster Avenue over MBTA and BMRR

ITEM # QUANTITY ITEM WITH UNIT BID PRICE

WRITTEN IN WORDS

UNIT PRICE AMOUNT

810.4 360 PTC OVERHEAD WIRE RELOCATION

AT _________________________

PER FOOT

811.35 3 PULL BOX ADJUSTED

AT _________________________

EACH

811.36 3 ELECTRIC MANHOLE ADJUSTED

AT _________________________

EACH

811.37 2 ELECTRIC HANDHOLE ADJUSTED

AT _________________________

EACH

813.591 410 FIRE ALARM CABLE (COPPER)

AT _________________________

PER FOOT

813.592 240 FIRE ALARM CABLE (COPPER) REMOVED AND RESET

AT _________________________

PER FOOT

816.91 1 TEMPORARY TRAFFIC SIGNAL RECONSTRUCTION

LOCATION NO. 1

AT _________________________

LUMP SUM

817.10 2 SIGNAL POST AND BASE STANDARD - 8 FOOT

AT _________________________

EACH

819.855 2 APS PUSHBUTTON

AT _________________________

EACH

CMS104 - Report Run Date: 10/1/2026 6:44 AM Page 14

Addendum No. 1, October 1, 2026

B00420 - 15

Description : Bridge Replacement, S-17-016 (3GF), Webster Avenue over MBTA and BMRR

ITEM # QUANTITY ITEM WITH UNIT BID PRICE

WRITTEN IN WORDS

UNIT PRICE AMOUNT

821.01 2 LIGHTING POLE COMPLETE - SOMERVILLE STANDARD

AT _________________________

EACH

821.09 3 UTILITY POLE - WOOD

AT _________________________

EACH

823.71 2 HIGHWAY LIGHTING POLE AND LUMINAIRE REMOVED AND

STACKED

AT _________________________

EACH

826.52 1 FIRE ALARM BOX REMOVED AND STACKED

AT _________________________

EACH

826.54 1 FIRE ALARM BOX

AT _________________________

EACH

832. 75 WARNING-REGULATORY AND ROUTE MARKER - ALUMINUM

PANEL (TYPE A)

AT _________________________

PER SQUARE FOOT

833.7 3 DELINEATION FOR GUARD RAIL TERMINI

AT _________________________

EACH

847.1 13 SIGN SUP (N/GUIDE)+RTE MKR W/1 BRKWAY POST

ASSEMBLY - STEEL

AT _________________________

EACH

850.41 1,000 ROADWAY FLAGGER

AT _________________________

PER HOUR

CMS104 - Report Run Date: 10/1/2026 6:44 AM Page 15

Addendum No. 1, October 1, 2026

B00420 - 16

Description : Bridge Replacement, S-17-016 (3GF), Webster Avenue over MBTA and BMRR

ITEM # QUANTITY ITEM WITH UNIT BID PRICE

WRITTEN IN WORDS

UNIT PRICE AMOUNT

852. 930 SAFETY SIGNING FOR TRAFFIC MANAGEMENT

AT _________________________

PER SQUARE FOOT

853.1 20 PORTABLE BREAKAWAY BARRICADE TYPE III

AT _________________________

EACH

853.2 250 TEMPORARY BARRIER (TL-2)

AT _________________________

PER FOOT

853.8 700 TEMPORARY ILLUMINATION FOR WORK ZONE

AT _________________________

PER DAY

854.016 3,800 TEMPORARY PAVING MARKINGS - 6 INCH (PAINTED)

AT _________________________

PER FOOT

854.036 1,600 TEMPORARY PAVING MARKINGS - 6 INCH (TAPE)

AT _________________________

PER FOOT

854.1 500 PAVEMENT MARKING REMOVAL

AT _________________________

PER SQUARE FOOT

856.060 60 ARROW BOARD (TYPE B)

AT _________________________

PER DAY

856.12 1,080 PORTABLE CHANGEABLE MESSAGE SIGN

AT _________________________

PER DAY

CMS104 - Report Run Date: 10/1/2026 6:44 AM Page 16

Addendum No. 1, October 1, 2026

B00420 - 17

Description : Bridge Replacement, S-17-016 (3GF), Webster Avenue over MBTA and BMRR

ITEM # QUANTITY ITEM WITH UNIT BID PRICE

WRITTEN IN WORDS

UNIT PRICE AMOUNT

859. 1,120 REFLECTORIZED DRUM

AT _________________________

PER DAY

859.1 280 REFLECTORIZED DRUMS WITH SEQUENTIAL FLASHING

WARNING LIGHTS

AT _________________________

PER DAY

864.04 100 PAVEMENT ARROWS AND LEGENDS REFLECTORIZED

WHITE (THERMOPLASTIC)

AT _________________________

PER SQUARE FOOT

864.12 3 SYMBOLS (PF)

AT _________________________

EACH

864.13 3 ARROWS (PF)

AT _________________________

EACH

864.41 1,550 GREEN COLORIZED PAVEMENT MARKINGS

AT _________________________

PER SQUARE FOOT

866.106 1,525 6 INCH REFLECTORIZED WHITE LINE (THERMOPLASTIC)

AT _________________________

PER FOOT

866.112 650 12 INCH REFLECTORIZED WHITE LINE (THERMOPLASTIC)

AT _________________________

PER FOOT

867.106 1,575 6 INCH REFLECTORIZED YELLOW LINE (THERMOPLASTIC)

AT _________________________

PER FOOT

CMS104 - Report Run Date: 10/1/2026 6:44 AM Page 17

Addendum No. 1, October 1, 2026

B00420 - 18

Description : Bridge Replacement, S-17-016 (3GF), Webster Avenue over MBTA and BMRR

ITEM # QUANTITY ITEM WITH UNIT BID PRICE

WRITTEN IN WORDS

UNIT PRICE AMOUNT

874. 6 STREET NAME SIGN

AT _________________________

EACH

874.2 11 TRAFFIC SIGN REMOVED AND RESET

AT _________________________

EACH

874.41 18 TRAFFIC SIGN REMOVED AND DISCARDED

AT _________________________

EACH

874.8 2 TRAFFIC SIGN - EXCLUDING COST OF SIGN

AT _________________________

EACH

945.10 9,390 DRILLED MICROPILES

AT _________________________

PER FOOT

945.20 690 CORING THROUGH ABUTMENTS

AT _________________________

PER FOOT

948.60 1 MICROPILE VERIFICATION LOAD TEST

AT _________________________

EACH

948.61 3 MICROPILE PROOF LOAD TEST

AT _________________________

EACH

953.1 1 TEMPORARY SUPPORT OF EXCAVATION OF BRIDGE NO.

S-17-016

AT _________________________

LUMP SUM

CMS104 - Report Run Date: 10/1/2026 6:44 AM Page 18

Addendum No. 1, October 1, 2026

B00420 - 19

Description : Bridge Replacement, S-17-016 (3GF), Webster Avenue over MBTA and BMRR

ITEM # QUANTITY ITEM WITH UNIT BID PRICE

WRITTEN IN WORDS

UNIT PRICE AMOUNT

964.11 6,650 ANTI-GRAFFITI COATING

AT _________________________

PER SQUARE FOOT

986. 30 MODIFIED ROCKFILL

AT _________________________

PER TON

992.33 1 TEMPORARY UTILITY SUPPORT STRUCTURE

AT _________________________

LUMP SUM

994.01 1 TEMPORARY PROTECTIVE SHIELDING BRIDGE NO. S-17-

016 (3GF)

AT _________________________

LUMP SUM

995.01 1 BRIDGE STRUCTURE, BRIDGE NO. S-17-016 (ATX)

AT _________________________

LUMP SUM

Total Qty: 60,926.1

CMS104 - Report Run Date: 10/1/2026 6:44 AM Page 19

① Addendum No. 1, October 1, 2026

①

B00420 - 20

B00420-2 A-1