New NB I-25 to U.S. 6 off-ramp to open after weekend closures

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US 6 Bridges Project

DENVER — The northbound I-25 off-ramp to the U.S. 6 interchange will close this weekend to allow completion of a new bridge that spans the railroad tracks, a project that should bring significant improvement to northbound I-25 traffic flow.

The northbound off-ramp to U.S. 6 from I-25 will be closed all weekend from 10 p.m. Friday through 5 a.m. Monday.

When the new bridge opens on Monday, the right lane on northbound I-25 from the Sante Fe Drive on-ramp will be continuous all the way to the U.S. 6 interchange.

Drivers entering northbound I-25 from Santa Fe Drive will no longer be forced to merge left before being able to exit at U.S. 6.

“This should improve the flow of traffic on northbound I-25 through the area,” said Kevin Sullivan, CDOT Project Director.

Last August, CDOT added a fourth through lane of traffic on northbound I-25 between Santa Fe Drive and the U.S. 6 interchange as part of the Gap Lane Project. Since then, however, drivers have only experienced part of the benefits of that project while crews have worked to complete the new off-ramps to US 6.

When this northbound off-ramp bridge opens, drivers will experience the benefits of having four continuous, uninterrupted lanes of travel on northbound I-25. In addition, there will be a fifth auxiliary lane connecting the northbound Santa Fe Drive on-ramp to northbound I-25 with the off-ramps to US 6.


  • Northbound I-25 to westbound US 6 detour: Motorists should take 8th Avenue west to Federal Boulevard, then use the Federal Boulevard on-ramp to westbound US 6.
  • Northbound I-25 to eastbound US 6 detour: Motorists should exit at 8th Avenue and go east to Kalamath Street, then south on Kalamath to access eastbound 6th Avenue.

This is all part of the $98 million US 6 Bridges Design-Build Project to replace six obsolete bridges on U.S. 6 between Knox Court and I-25, improve traffic movements in the I-25 and U.S. 6 interchange and enhance driver safety by eliminating several traffic weave movements along US 6 between Federal Boulevard and I-25.

Substantial project completion is planned for October 2015.

For updated project information, visit the CDOT website on the project.