Roadway Add Lanes and Reconstruction Project - City of McHenry within McHenry County

The Illinois Department of Transportation is requesting electronic bids for a roadway reconstruction and lane-addition project on Illinois Route 31 in the City of McHenry, McHenry County, with bids due June 12, 2026 at 12:00 p.m. via the iCX-Integrated Contractors Exchange system (Contract No. 62U72). The project spans 8,360 feet (1.58 miles) north of Bull Valley Road to Illinois Route 120.

The scope includes pavement removal, earth excavation and embankment placement, precast box culvert and bridge installation, storm and sanitary sewer work, Portland cement concrete pavement construction with curb and gutter, sidewalk and shared use path construction, traffic signal and highway lighting installation, water main relocation, pavement marking, landscaping, and erosion and sediment control. Significant utility relocations by ComEd, Nicor Gas, Comcast, AT&T, and I3 Broadband are required, with estimated durations of 90 to 300 working days. The contractor must coordinate weekly with the adjacent Contract 80C85 project and maintain normal roadway maintenance (excluding snow removal) from project inception. Tree clearing is prohibited April 1–October 31 except selective clearing; weed control spraying requires contractor licensing and pesticide application notification under Illinois law.

The project is federally funded through the National Highway Performance Program and Local Roads and Streets mechanisms. Construction cannot commence until April 1, 2027. The interim completion date for all lanes, sidewalks, shared use paths, permanent traffic signals, pavement marking, and signing is October 31, 2028; final completion is May 31, 2029. The contract will be awarded to the lowest responsive and responsible bidder. IDOT reserves the right to reject any or all proposals and determine responsibility at award. Public bid opening follows electronic submission.