Illinois Tollway Bridge Construction O’Hare to Westbound IL RT 390 Ramp at I-490 and IL RT 390 Interchange

Cotter is providing Assistant Resident Engineer services to the Illinois Highway Tollway Authority for the O’Hare to Westbound Rt. 90 Ramp at the I-490 and Rt. 390 interchange. This $8 million bridge construction project along I-490 requires the construction of the bridge carrying Ramp Q1 (Westbound ramp from O’Hare to Illinois Route 390) over Ramps 04 (Westbound ramp from Northbound I-490 to Supreme Drive) and Ramps P1/O8 (Westbound ramp from Southbound I-490 to Westbound Illinois Route 390 and Supreme Drive). Work also includes the construction of a retaining wall, as well as extensive earthwork and grading for Ramp Q1, construction of storm sewer, erosion and sediment control, and traffic control and protection.

Chicago, IL


July, 2022

Project completion

Project Team

Have a project
in mind?