48th Avenue Bridge Improvement Project

The City and County of Denver has contracted SEMA Construction of Centennial to begin rehabilitation work on the 48th Avenue Viaduct in early April.  The bridge is located in northwest Denver and spans over the rail lines for UPRR, BNSF and RTD. These improvements will extend the life of the bridge, constructed in the late 1970s, that provides an important connection between the Globeville and Sunnyside and Chaffee Park neighborhoods.


Schedule and Timing

Work is scheduled to begin on April 12 and is expected to last until fall of 2021.  By the end of June 2021, work on the project was 40% complete.  Normal working hours will be from 7 a.m. to 6 p.m. Monday through Friday, with occasional work overnight and on weekends. No work on major holidays is expected.

Phases of work that have been completed:

  • Remove existing layer of asphalt
  • Inspect and test concrete beneath the top layer
  • Repair concrete and parts of the bridge structure
  • Repair sidewalk and add new guardrail

Tasks yet to be completed are:

  • Replace expansion joints of the bridge
  • Remove and install a new waterproofing membrane
  • Apply new layers of concrete and asphalt 

Project Map

48th Avenue Bridge Improvement Project location map

Project Photos

Crews conduct repair work on the viaduct’s road surface.


Crews conduct repair work on the viaduct's road surface.

Crews replace concrete on 48th Avenue viaduct.


Crews replace concrete on 48th Avenue Viaduct.