work zone sign

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

Holly Street Closures

Holly Street between 112th Avenue and 119th Avenue, 119th Avenue between Holly Street and Jasmine Street, and 112th Avenue between Holly Street and Riverdale Road will have periodic lane closures.

These closure are part of the Xcel Substation project. More information on construction updates and schedule for the Xcel Substation project can be found at To submit questions and provide feedback, call the project hotline at 844-551-6281 or email the project team at

160th Avenue Closure

160th Avenue between Huron Street and Washington Street will be closed from 10/01/2018 to 3/29/2019.

The detour route for Washington Street traffic is to, go north on Washington Street to SH 7, go west on SH 7 to Huron Street, then go south on Huron Street to 160th Avenue.

The detour route for Huron Street traffic is to, go north on Huron Street to SH 7, go east on SH 7 to Washington Street, then go south on Washington Street to 160th Avenue.

This closure is for construction associated with the Top Golf and Larkridge Apartments developments.

York Street Closure

York Street will be closed between 112th Avenue and 116th Way from 12/03/2018 to 12/21/2018.

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

The detour route for northbound York Street traffic is to go east on 112th Avenue to Colorado Boulevard, north on Colorado Boulevard to 120th Avenue, and then west on 120th Avenue to York Street.

This closure is part of the RTDs Fastracks Project.


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