Potable Water Main and Tunnel Construction

The Grand Prairie Water Commission is seeking bids to construct a 66-inch potable water main, a 575-foot tunnel, two deep shafts, and related work for its Cal-Sag Crossing project in Illinois.

Grand Prairie Water Commission


General
Open
AWSP-07-01
Dec 17, 2026 09:00 PM
Oct 22, 2026 12:00 PM
Invitation for/to Bid (IFB/ITB)
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AWSP-07-01

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Cal-Sag Crossing

Description

The Grand Prairie Water Commission is soliciting bids for construction of the Alternative Water Source Program Cal-Sag Crossing project. The work includes approximately 1,200 feet of 66-inch-diameter steel potable water main, 575 feet of 10-foot-diameter tunnel, two 25-foot-diameter shafts approximately 90 feet deep, and related work. The project is subject to applicable project labor agreements and prevailing-wage requirements, including the Illinois Prevailing Wage Act and, where applicable, the Davis-Bacon Act. The procurement is expected to be funded in part by an EPA WIFIA loan. Bidding documents are restricted to eligible contractors, major subcontractors, and vendors or material suppliers verified by the Owner. Eligible parties must request and submit a signed confidentiality and nondisclosure agreement to obtain access. The pre-bid conference is virtual and strongly encouraged; the Owner reserves the right to reject bids from bidders who do not attend. Detailed bid-submittal requirements are in Section 00 21 00 of the bidding documents.

Classification Codes
NAICS237110Water and Sewer Line and Related Structures Construction
PSCY1LCCONSTRUCTION OF TUNNELS AND SUBSURFACE STRUCTURES
Smart Codes
potable water main constructionwater tunnel constructiondeep shaft construction
Specifications
Service Only
Timeline
Nov 11, 2026 04:00 PM-Pre-Bid Conference (optional)
Virtual meeting; joining information will be provided to eligible recipients of the bidding documents. Attendance is strongly encouraged, and the Owner reserves the right to reject bids from bidders who do not attend.
Nov 27, 2026 11:00 PM-Questions Due
Dec 17, 2026 09:00 PM-Bid Submission Deadline
Dec 17, 2026 09:30 PM-Bid Opening (optional)
Virtual meeting link will be provided to bidders upon receipt of their bids.
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