Thank you for visiting the 170th Street Bridge over Thorn Creek Improvement Project website. The Cook County Department of Transportation and Highways is committed to ensuring that residents are part of our planning process. Bookmark this page or join the mailing list to stay up-to-date on the project.
Project Overview
The 170th Street Bridge Over Thorn Creek Improvement Project is a bridge replacement project currently in the final design phase. During the preliminary engineering phase, the project team developed several design alternatives and conducted environmental and engineering studies to determine the preferred alternative. The preferred alternative was presented at a public information meeting on July 12, 2023, and input from the community was received. Community members can also provide feedback at any time through the project comment form. After the final design of the preferred alternative, construction of the new bridge is targeted for 2026.
Project Updates
June 2024: Detailed design is underway and on track for completion in 2024. To streamline the construction and reduce impacts to motorists, the construction will be completed in two stages rather than the three stages presented at the public information meeting in July 2023. A sidewalk will be constructed along the north side of 170th Street between Van Dam Road and Carrington Drive.