Full nighttime closure of southbound I-25 between 120th Avenue and 104th Avenue

October 25, 2017 - Denver Metro Colorado/CDOT Region 1 - Detours will be in place, prepare for significant traffic delays


ADAMS COUNTY – The Colorado Department of Transportation and contractor partner, Hamon Infrastructure, will conduct full nighttime closures on southbound Interstate 25 between 120th Avenue and 104th Avenue starting Wednesday, Nov. 1 through Friday, Nov. 3 from 10 p.m. to 5:30 a.m. These closures are necessary so crews can install new storm sewer infrastructure, and perform asphalt paving and patching. This work is a part of the North I-25 Express Lanes: 120th Avenue to Northwest Parkway/E-470 project.

Detour routes are expected to have up to 25 minute delays.


  • Southbound I-25 between 120th and 104th Avenues - Wednesday, Nov. 1 through Friday, Nov. 3 from 10 p.m. to 5:30 a.m.: To detour around these closures, motorists traveling on southbound I-25 will take the 120th Avenue exit to southbound Huron Street and then turn left onto eastbound 104th Avenue to I-25 southbound.

Motorists should expect delays and follow detours as directed.  Detour routes are expected to have a delay of approximately 25 minutes depending on traffic. The late-night weekday hours are scheduled to minimize traffic delays as much as possible. 



The North I-25 Express Lanes project from 120th Avenue to Northwest Parkway/E-470 is a $97.5 million project that will improve safety, capacity and user choice to a rapidly developing region.  

This project will continue the previous Express Lanes project, which was completed on I-25 between US 36 and 120th Avenue, and will extend the Express Lanes to Northwest Parkway/

E-470. The project will add capacity on I-25 up to Northwest Parkway/E-470 and construct a new asphalt surface from 120th Avenue to Colorado Highway 7. Motorists can expect the roadway to be in its final alignment by winter 2018. 

Construction will take place Monday through Friday, 7 a.m. to 4:30 p.m. with periodic night and weekend work. Motorists can expect various lane closures on both northbound and southbound I-25 as well as periodic ramp closures. Traffic will be maintained during peak travel times throughout construction.

About Express Lanes: Express Lanes increase roadway capacity and help to manage congestion on the highways. The use of toll pricing during peak travel times reduces delays, manages congestion and maintains reliable travel times. Express Lanes currently are open between 120th Avenue and US 36 on North I-25 and, US 36 from Denver to Boulder and on the I-70 Mountain Express Lane. For more information, visit www.codot.gov/programs/expresslanes. To get an ExpressToll account and pass, visit www.expresstoll.com.

Ways to Commute: Smart Commute Metro North is offering some incentives to help you commute smarter! Visit smartcommutemetronorth.org for more information.


For additional information about this project, call the information line at 720-737-5118, email the team at [email protected], or visit the project website at www.codot.gov/projects/north-i-25/NorthI-25/120thNorth. For information on travel conditions, visit www.COTrip.org, sign up for GovDelivery, or call 511. Updates are also available via Twitter @coloradodot and CDOT’s Facebook page at Facebook.com/Coloradodot.