I-25-4768 Addendum1.pdf

February 23, 2026

Illinois State Toll Highway Authority Contract No. I-25-4768 Addendum No. 1

ADDENDUM NO. 1

TO

CONTRACT REQUIREMENTS

FOR CONTRACT I-25-4768

ILLINOIS STATE TOLL HIGHWAY AUTHORITY

Date: February 23, 2026

For which proposals will be received by the Illinois State Toll Highway Authority through electronic bidding via BidBuy until 10:30:00 A.M. local time, March 19, 2026.

NOTICE OF REVISION TO CONTRACT

NOTES:

1. Revised Advertisement page A-1R accompanies this Addendum and much be inserted into the Contract Proposal by the Bidder.

2. Revised Advertisement page A-2R accompanies this Addendum and much be inserted into the Contract Proposal by the Bidder.

Illinois State Toll Highway Authority Contract No. I-25-4768 Addendum No. 1 February 23, 2026

CHANGES TO THE CONTRACT REQUIREMENTS

CHANGES TO THE ADVERTISEMENT FOR SEALED BID

Change #1 Contract Requirements, Volume I, Advertisement, replace page A-1 with A-1R (attached). This replacement contains the following revisions:

1.1 The pre-bid meeting date has been revised.

Change #2 Contract Requirements, Volume I, Advertisement, replace page A-2 with A-2R (attached). This replacement contains the following revisions:

2.1 The pre-bid meeting date has been revised.

2.2 The meeting ID, passcode and registration link has been revised.

END OF ADDENDUM CHANGES

A-1R

THE ILLINOIS STATE TOLL HIGHWAY AUTHORITY

ADVERTISEMENT FOR BIDS

Bid Schedule and Information for

CONTRACT NO: I-25-4768

Electronic submissions for the above numbered contract as described below will be received by the Illinois Tollway via BidBuy, the State of Illinois eProcurement System, until 10:30:00 a.m. local time on March 19, 2026. The Illinois State Tollway Highway Authority (ISTHA) will no longer accept manual, hard copy bid submissions. All bidders are strongly encouraged to submit bids timely as the system will not accept late bid submittals. Bid results will be posted on the Tollway’s on-line plan room:

www.illinoistollwaybidding.com.

For assistance with registration in BidBuy or submitting electronic bids, please contact the BidBuy Vendor Help Desk at:

il.bidbuy@illinois.gov and /or phone: 866-455-2897.

The optional pre-bid meeting will be held through Microsoft Teams on February 26, 2026 at 2:00 p.m.. The meeting information is listed on the A-2 page.

The work to be done under this contract shall be started on or about June 15, 2026. All work under this contract shall be completed by September 24, 2027. The location of the services to be performed for this contract is the Elgin O'Hare Western Access Tollway (I-490) between Mile Post 3.0 and Mile Post 4.0 in DuPage County, Illinois. The work under this contract includes earthwork, grading and stockpile construction, Airport Operation Area fence and perimeter road construction, protection of aviation operation equipment and utilities, erosion and sediment control measures and landscaping, drainage and other miscellaneous work.

Bidders may be required to be pre-qualified by the Illinois Department of Transportation (IDOT).

IDOT Prequalification required: Yes

If ‘NO’, ignore any reference to IDOT Prequalification within the remainder of this document.

Joint Ventures shall be limited to no more than three (3) individually IDOT pre-qualified members.

Bidders are also required to be registered, or submit evidence of application, with the Illinois Department of Human Rights (IDHR). There are NO EXCEPTIONS.

Please note that written or oral communications received by the Illinois Tollway in connection with this solicitation may be required to be reported to the Procurement Policy Board as required by law. This provision is not intended to prohibit communications with State employees regarding a procurement matter, but rather only requires reporting of those communications when they occur.

All bids must be on forms prescribed by the Illinois Tollway and must comply with the terms and conditions set forth in the contract documents. Copies of the plans, special provisions, bid forms and other contract documents for this contract are available from BHFX Digital Imaging and can be viewed and/or ordered for purchase by visiting the On-line Plan Room via www.illinoistollwaybidding.com. Copies of the current Illinois Tollway Supplemental Specifications to the Illinois Department of Transportation Standard Specifications for Road and Bridge Construction can be purchased directly from BHFX Digital Imaging.

The current Illinois Tollway Supplemental Specifications may also be viewed in the ‘Doing Business’ section on the Tollway website. Current Illinois Department of Transportation Standard Specifications for Road and Bridge Construction, Supplemental Specifications and Recurring Special Provisions can be viewed and purchased from the Illinois Department of Transportation website. Electronic copies of the contract documents are also available on compact disk (CD) from BHFX Digital Imaging.

Copies are in a portable document format (PDF). Bidders with questions or in need of assistance in purchasing contract documents are to contact a BHFX Digital Imaging, Customer Service Representative at 630-393-0777, ask for the Plan Room.

Questions pertaining to the intent of the contract documents may be sent to the Illinois Tollway, attention 4749D.4768_Questions@docs.e-builder.net, to be received no later than 2:00 p.m. local time on March 3, 2026.

A completed Questionnaire and a statement of current contractual obligations on forms supplied by the Illinois Tollway will be required from the apparent low bidder once the apparent low bidder is determined. Each bid must be accompanied by a Bid Guaranty in the amount of five (5%) percent of the total amount shown in the bid for the contract. The Bid Guaranty shall be in the form of an acceptable bid bond or a bank draft, certified check or cashier's check drawn on a solvent bank made payable to the Illinois State Toll Highway Authority.

Award of the above contract, if any award be made, will be to the lowest responsive and responsible bidder or bidders. The Illinois Tollway reserves the right to reject any and all bids, to waive technicalities, or cancel the solicitation.

COPIES OF PLANS, SPECIAL PROVISIONS, BID FORMS, CONTRACT DOCUMENTS, STANDARD SPECIFICATIONS AND SUPPLEMENTAL SPECIFICATIONS ARE NOT AVAILABLE AT THE TOLLWAY CENTRAL ADMINISTRATION BUILDING.

DATE: February 23, 2026

PRE-BID MEETING

FOR CONTRACT I-25-4768

ILLINOIS STATE TOLL HIGHWAY AUTHORITY

A-2R

Date: February 23, 2026

ANNOUNCEMENT

An optional pre-bid meeting will be held through Microsoft Teams on February 26, 2026, at 2:00 p.m.

(UTC-05:00) Central Time (US & Canada).

Complete the registration information to join Microsoft Teams.

Please include the following:

First Name Last Name Email Address: (confirm email address) Phone Number:

Title and Organization

Thursday, February 26, 2026 | 30 minutes| (UTC-05:00) Central Time (US & Canada)

Meeting ID: 242 300 181 971 52 Passcode: 7Z2Ry942

Register and Join Event:

https://events.gcc.teams.microsoft.com/event/0bb987c6-41b0-4cf4-a85b-9ded9489fc62@48475f88-04d3- 4aa6-ae94-21dcfec788aa

Dial-in by phone: +1 323-486-3157,,471092490#United States, Chicago Phone conference ID: 471 092 490# jspiekermann Reviewer Line jspiekermann Reviewer Line jspiekermann Reviewer Line jspiekermann Reviewer Line jspiekermann Reviewer Line jspiekermann Reviewer Line