Girder Installation to Close I-25 Near Alameda Avenue This Week

March 28, 2011 - Denver Metro Colorado/CDOT Region 6 - DENVER —Tonight, March 28th through Thursday, March 31st, the Colorado Department of Transportation (CDOT) will install bridge girders for the southern portion of the new Alameda Avenue bridge over I-25.

To complete the work, there will be full closures of northbound and southbound I-25 near Alameda Avenue each night, weather permitting.

Each night, one lane of northbound and southbound I-25 near Alameda Avenue will be closed starting at 8 p.m. with a second lane closing at 9 p.m.  All lanes of northbound and southbound I-25 will close at 11 p.m. and will reopen by 5:30 a.m. the following day.

While the full closures of northbound and southbound I-25 near Alameda Avenue are in place, motorists can utilize the following detour routes:

  • Northbound Detour Route: Motorists on northbound I-25 will exit onto Alameda Avenue and will follow the detour signs to Santa Fe Drive. Once on Santa Fe Drive, head north to Cedar Avenue and take a left for access to northbound I-25.
  • Southbound Detour Route:  Motorists on southbound I-25 will use the on and off-ramps at Alameda Avenue as a detour route; however, this will reduce I-25 to one lane near 6th Avenue and alternate routes are strongly advised.

Throughout the week, major delays are expected on I-25 and Alameda Avenue and alternate routes are strongly advised.  CDOT would like to remind motorists to obey all construction signs and flaggers and to “Slow for the Cone Zone.” Most fines for infractions that occur in the work zone will be doubled.

This work is part of a $37.4 million American Recovery and Reinvestment Act (ARRA) project that will replace the Alameda Avenue bridge over I-25 with one that is wider to accommodate an additional lane in each direction.  The project will also construct a longer acceleration ramp from to Kalamath Street to northbound I-25, widen I-25 under Alameda Avenue for wider shoulders and improve drainage to alleviate the flooding that often occurs in the area.

For e-mail updates on the project, visit and click on the icon in the upper right-hand corner.  The link will take you to a list of items you can subscribe to including the I-25/Alameda Avenue project listed under “Projects.”

Jalisco International, Inc. of Commerce City, CO is the contractor for this project scheduled to be complete by the end of September 2012.

In all, Colorado will receive nearly $400 million from the Recovery Act for highway projects and $121 million for transit projects.  For more information about how Colorado is putting the recovery act to work, visit For a list of CDOT’s Recovery Act projects, visit