Illinois Route 40

IL 40 bridge over the Rock River is a project looking to replace the IL 40 (1st Avenue) Rock River bridge between Sterling and Rock Falls. The purpose of the project is to replace the IL 40 (1st Avenue) bridge over the Rock River for structural reasons. The IL 40 Bridge is the primary connection over the Rock River between Sterling and Rock Falls, and is also the primary route for through traffic. This important route has an average daily traffic (ADT) volume of 26,000 vehicles. The project limits are from 2nd Street in Rock Falls to 2nd Street in Sterling. Improvements in this area are significantly constrained by the presence of building structures immediately adjacent to the bridge and the railroad overpass on the north end of the bridge in Sterling. The project team will analyze different types of bridges, alternatives for lane widths, pedestrian and bicycle access, and other characteristics of the proposed bridge, as well as measures for traffic maintenance during bridge construction, including potential detour alignments.

CSS allowed for formalization of the coordination with the cities and affected property owners and the public outreach with the project stakeholders.

Contact person: Rebecca.Marruffo@illinois.gov