CDOT Begins Bridge Replacement Work on I-76 Over UPRR in Adams County

August 20, 2014 - Denver Metro Colorado/CDOT Region 1 - ADAMS COUNTY –The Colorado Department of Transportation (CDOT) has begun work on I-76 over the Union Pacific Railroad (UPRR) in Adams County (MP 12.5 – MP 13.1), which includes major bridge demolition and construction.

The $11.3M project was awarded to SEMA Construction Inc. of Centennial, Colorado and is estimated to be complete by August 2015.

Travel will be reduced to one lane for both eastbound and westbound traffic from MP 12.5 – 13.1 for the remainder of the project in order to build median crossovers and do concrete pavement reconstruction for the new bridges in advance of the demolition of the westbound I-76 Bridge.  Speeds will be reduced to 55 MPH through the work zone.

Demolition of the westbound I-76 Bridge over the UPRR is anticipated to take place by early September. Travel impacts include:

  • Reducing traffic to one lane in each direction separated by a concrete barrier, routing westbound traffic to the eastbound lane for a short distance before switching back.
  • A detour for northbound US 85 traffic while the westbound structure is being reconstructed.

Temporary roadway luminaries will be installed for the duration of the project to provide additional illumination for the motorists traveling through the work area when the roadway is reduced to one lane in each direction.

For the eastbound I-76 bridge replacement, traffic will be reduced to one lane in each direction, crossing over the median into the westbound lanes for a short distance before crossing back over to the eastbound lanes after the bridge.

For project updates, please email [email protected] or call 720-583-8853. For information about other CDOT projects, the public may log on to CDOT’s traveler information web site at or call 511 from anywhere in the state. Better yet, sign up for email or text messaging on CDOT projects in your area by going to and choosing the green cell phone icon in the upper right corner. Thank you for going Slow for the Cone Zone!