Traffic shifts bring 6-month closure of SB I-25 off-ramp to EB US 6

January 21, 2015 - Denver Metro/CDOT Region 1 - Shifting US 6 traffic to the north includes overnight closure of EB US 6 at Sheridan.Shifting US 6 traffic to the north includes overnight closure of EB US 6 at Sheridan

DENVER – This weekend, crews on the Colorado Department of Transportation’s (CDOT) US 6 Bridges Design Build Project will shift both directions of US 6 traffic onto new bridges over Bryant Street and the S. Platte River. Doing so will require a series of impacts along the project corridor, resulting in a 6-month closure of the southbound I-25 off-ramp to eastbound US 6. This weekend’s activities will begin at 10 p.m. Friday, Jan. 23, and be complete by 5 a.m. Monday, Jan. 26.

“This traffic shift marks a major milestone for the project and will create room for a significant amount of additional work as we keep moving toward completion in the fall,” said Kevin Sullivan, CDOT Project Director. “Drivers should remain alert, as there will be a new traffic alignment come Monday morning.”

These traffic impacts will include: 

  • Eastbound US 6 will close at Sheridan Boulevard Friday at 10 p.m. and reopen Saturday at about noon. 
  • Along with this traffic shift, the southbound I-25 to eastbound US 6 loop ramp will close Friday night and remain closed for about six months.
  • Throughout the weekend the eastbound US 6 on-ramps to I-25 will be closed while crews pave a new, temporary ramp alignment.
  • Also during the weekend, there will be no access to eastbound US 6 from Federal Boulevard or 5th Avenue.

Also during the weekend, all lanes of westbound US 6 between Federal Boulevard and Knox Court will shift to the north onto new, permanent concrete. This work requires closing various lanes on westbound US 6 throughout the weekend.

Initial work in preparation of the weekend will begin on Thursday, Jan. 22, from 10 p.m. to 5 a.m., when crews will work to shift all lanes of westbound US 6 traffic to the north onto the new US 6 bridges over the S. Platte River and Bryant Street. There will be various lane closures on westbound US 6 overnight Thursday while this shift occurs.

Effective the morning of Monday, Jan. 26, westbound US 6 traffic coming out of downtown Denver will once again be able to exit at Federal Boulevard.


  • During the eastbound US 6 closure: Drivers will exit eastbound US 6 at Sheridan Boulevard and either go south to Alameda Avenue or north to Colfax Avenue to continue traveling east.
  • Eastbound US 6 traffic looking to access I-25 during the weekend closure: Drivers should exit US 6 at Osage Street, then take Osage around to enter westbound 6th Avenue to access I-25.
  • Federal Boulevard traffic looking to access eastbound US 6 during the weekend closure: Drivers should use Alameda, 8th or Colfax avenues to travel east to downtown or access I-25.
  • Southbound I-25 traffic looking to access eastbound US 6 during the six month off-ramp closure: Drivers should exit I-25 at 8th Avenue and follow the signs to take 8th Avenue east toward downtown Denver.

PROJECT INFORMATION: The $98 million US 6 Bridges Design-Build Project will replace six obsolete bridges on US 6 between Knox Court and I-25, improve traffic movements in the I-25 and US 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 August 2015. 

For updated project information, visit, call 720-881-5540 or email [email protected].

During construction, commuters might want to consider alternative modes of transportation to help ease the impacts of the project. This could include using the Regional Transportation District’s West Rail Line or bus service or taking advantage of carpool/vanpool options. For information on RTD services, call 303-299-6000. For carpool and vanpool information, call 303-458-7665.

To receive real-time updates about road conditions in your area, visit and click on the green cell phone icon in the upper right hand corner of the page. Information about weekly lane closures will be available at Live road conditions are available at, downloading the CDOT Mobile app or by calling 511 from anywhere in the state. Updates are also available via Twitter @coloradodot and be sure to “Like” our Facebook page at