112th and Uptown Complete Streets - Widening

Construction Update

Starting September 29th through the completion of the project in the summer of 2026, the Railroad Quiet Zone at 112th and Uptown will be suspended and trains will blow their horn at the crossing. This suspension is a safety precaution as the railroad gates are repositioned during the various construction phases.

Other News & Updates

The 112th and Uptown Complete Streets Project was developed to support the Broomfield Comprehensive Plan and Transportation Plan goals and policies.

Project improvements include expanded capacity on the corridor from two to four lanes with bike lanes, sidewalks, intersection improvements, and a trail access connection to the US 36 Bikeway. 

Council approved a construction agreement with American West in February of 2025. Construction on the project is anticipated to begin in mid 2025 and will be completed in the summer of 2026. 

Striping Plans and Bike Lane Detour Plans

Background

W. 112th and Uptown is a minor arterial connecting key residential areas, employment centers, and urban centers in Broomfield and Westminster, as well as providing connectivity over US 36 and the Burlington Northern Santa Fe (BNSF) Railroad. US 36 and BNSF are two major transportation barriers limiting access to the US 36 Bikeway, which is designated as part of the DRCOG regional active transportation network and links to the US 36 & Broomfield Station Park N Ride with regional and local transit connections.

The traffic on W. 112th Ave./Uptown Avenue is currently over capacity and the corridor lacks consistent facilities to safely support active transportation modes within the project area. West 112th Ave./Uptown has been identified as part of the DRCOG High Injury Network.

The W. 112th Ave/Uptown Avenue Complete Streets Project was awarded funding through the Colorado Department of Transportation (CDOT) and the Denver Regional Council of Governments (DRCOG) Safer Main Streets Initiative grant program in 2020.  

Project improvements include expanded capacity on the corridor from two to four lanes with bike lanes, sidewalks, intersection improvements, and a trail access connection to the US 36 Bikeway.