work zone sign

The Cone Zone

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

Yosemite Street Closure

Yosemite Street between 136th Avenue and Riverdale Road will be closed from 7/27/2020 to 8/8/2020. 
The detour route for northbound Yosemite Street is to go east on Riverdale Road to 136th Avenue, then west on 136th Avenue to Yosemite Street.
The detour route for southbound Yosemite Street is to go east on 136th Avenue to Riverdale Road, then south on Riverdale Road to Yosemite Street.
This closure is for water and sewer service improvements as part of the Timberleaf development located on the south side of 136th Avenue, west of Yosemite Street. 

North I-25 Express Lanes Tolls Starting

On 6/12/2020, tolling will begin for the Express Lanes along I-25 between 120th Avenue and Northwest Parkway/E-470. 

Northbound I-25 Express lane entry locations: south of 120th Avenue, at 128th Avenue, and at 144th Avenue.

Southbound I-25 Express lane entry locations: north of 144th Avenue, at 128th Avenue, and south of 120th Avenue.

Only enter and exit the Express Lanes at designated locations denoted with a dashed white line on the pavement, For your safety, do not cross the solid white lines.

Visit for more information about Express Toll services. 

Visit  for more information about Express Lanes and how to use them.

Capital Improvement Projects
Traffic Alerts