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Board approves agreement with DOT for Springville Road interchange at US 151
Summary
Linn County supervisors approved an agreement with the Iowa DOT for a DOT-led interchange project converting the at-grade intersection at US 151 and Springville Road (County Road X20) into an overpass interchange; DOT will fund the project and pay for posted detours and road repairs caused by construction.
The Linn County Board of Supervisors voted Monday to approve an agreement with the Iowa Department of Transportation to accommodate a DOT-led interchange project at U.S. Highway 151 and County Road X20 (Springville Road).
Garrett Redish, assistant engineer for the Linn County Road Department, told the board the project is being funded and led by the DOT and will convert the current at-grade intersection into an interchange with Springville Road as an overpass. "So our local road, Springville Road, will be an overpass now. So it's gonna be an actual interchange where if you're on the DOT's 151, you have to take an exit to get off onto Springville Road. So it will no longer be an at grade intersection. It's gonna be an overpass," Garrett said.
Redish said the DOT will post and fund the primary detour, apply dust control to county roads it expects traffic may use, and repair any damage to county roads resulting from diverted traffic. He also explained that an existing road (O'Brien Lane) will be relocated and, after construction and acquisition of right-of-way, turned over to the county for ownership and maintenance.
Board members discussed public-safety benefits and future development impacts near Springville. One supervisor said the intersection has been a hotspot for accidents and fatalities and expressed support for the safety-focused change. The DOT's current tentative construction start is 2027, but Garrett cautioned the schedule could move earlier or later depending on circumstances.
The board approved the agreement by motion and unanimous vote. No financing obligations were assigned to the county under the agreement; the DOT will carry construction costs and agreed to fund detours and any necessary road repairs tied to the project.
