work zone sign

​​​​​​Below is information regarding lane closures and detours impacting the City of Thornton.

I-25 Closures

On 7/22/2019 all lanes of southbound I-25 will be closed between 144th Avenue and 136th Avenue starting at 9:30 PM and will reopen at 5:30 AM the following morning. 

The detour route for the southbound closure is to exit I-25 at 144th Avenue, go west on 144th Avenue to Huron Street or east on 144th Avenue to Washington Street, go south on Huron Street or Washington Street to 136th Avenue, then enter southbound I-25 at 136th Avenue.

The closures are part of the Colorado Department of Transportation's North I-25 Express Lanes Project. For more information please visit the project website at 

112th Avenue Closure

From 7/8/19 to 8/3/19 112th Avenue will be closed between East Drive and Steele Street.

The detour route for the westbound traffic is to go north on Colorado Boulevard to 120th Avenue, go west on 120th Avenue to York Street, then go south on York Street to 112th Avenue.

The detour route for the eastbound traffic is to go north on York Street to 120th Avenue, go east on 120th Avenue to Colorado Boulevard, then go south on Colorado Boulevard to 112th Avenue.

The closure is part of the City of Thornton's 112th Avenue Widening project.


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