Slope repairs on IL 148 over Crab Orchard Lake, 1. 5 miles south of Old IL 13.

The Illinois Department of Transportation is soliciting bids for slope repairs on Illinois Route 148 over Crab Orchard Lake, approximately 1.5 miles south of Old IL 13 in Williamson County, with electronic bids due June 12, 2026 at 12:00 p.m. via the iCX-Integrated Contractors Exchange system. The project is subject to FAP (Federal-Aid Primary) funding and requires compliance with prevailing wage, Equal Employment Opportunity, and Illinois Works Apprenticeship Initiative requirements for contracts valued at $500,000 or more.

The scope consists of slope stabilization and reworking of the aggregate shoulder and slope embankment extending approximately 0.71 miles along the causeway. Stone dumped rip-rap (A3 classification) will rebuild the slope on the east side. Key operational constraints include maintaining at least one lane of traffic at all times with two lanes open to the greatest extent possible. The contractor must coordinate with Crab Orchard National Wildlife Refuge under Special Use Permit #26-145 and provide at least 14 days' advance notice to the Engineer before construction work begins.

Identified utility conflicts include adjustments required for Ameren Illinois (gas), Frontier Communications, General Dynamics (communications), and the City of Marion (sewer and water) prior to construction. The contract documents incorporate the Standard Specifications for Road and Bridge Construction (Adopted January 1, 2022, Revised January 1, 2026) and supplemental and special provisions addressing traffic control, pavement markings, and regulated substances monitoring.

The contract will be awarded to the lowest responsive and responsible bidder. IDOT reserves the right to determine responsibility at the time of award and to reject any or all proposals. Bids will be publicly opened at 12:00 p.m. on June 12, 2026.