work zone sign

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

I-25 Ramp Closures

From 8:00 PM on 8/23/2019 to 5:30 AM on 8/26/2019 the on-ramp from 120th Avenue to southbound I-25 will be closed . The detour route is to go west on 120th Avenue to Huron Street, go south on Huron Street to 104th Avenue, then east on 104th Avenue to I-25.

The ramp 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


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