I-25/US 50B interchange project in Pueblo makes major progress in 2025

Travel Advisory

Jan. 7, 2026 - Southeastern Colorado - New ramps and sound walls to be constructed in 2026

Pueblo — The Colorado Department of Transportation, in partnership with SEMA Construction, has made major progress on the new Interstate 25 and US Highway 50B interchange in just one year of construction. Once complete, the interchange will operate as a diverging diamond interchange, improving drivability and providing safer driving conditions for motorists. Closing out the first year of construction, the project is celebrating the key milestones with significant progress anticipated in 2026.

2025 Construction Highlights

Construction on the I-25 and US 50B interchange project began in December 2024. Accomplishments to date include:

  • Bridge construction: Crews have made significant progress on three of the five bridges currently under construction, including a new bridge over Fountain Creek and two new bridges over the Union Pacific Railroad. Crews have set 46 girders and installed 91 structural caissons, totaling 3,140 linear feet, which is three times as tall as the Eiffel Tower.
  • New pavement: Crews have placed 14,000 square yards of concrete, equal to two NFL regulation football fields, to partially complete paving on the new northbound I-25 collector-distributor road between US 50B and 29th Street. This work required 450 truckloads of concrete.
  • Bridge and Ramp Demolition: To advance and facilitate construction, crews demolished the existing US 50B bridge over I-25, and the southbound I-25 on- and off-ramps. Crews removed a total of 600 tons of material, which is about five times the weight of a blue whale. Completing removal of the US 50B bridge and southbound ramps demolition ahead of schedule improves the efficiency of each construction phase. It opens new work areas at an accelerated rate, allowing vital elements of the project to be completed ahead of time without affecting traffic later on. This work amounts to approximately 3,000 hours, about four months, of saved time.
  • Embankment: Crews completed major earthwork to elevate the roadway to support bridge construction, moving 650,000 cubic yards of soil, which could fill an Olympic swimming pool 200 times.
  • Local economy support: 30 Pueblo natives are employed on the project, supporting construction and benefiting the local economy.

See the progress in action! Check out the drone compilation video below, highlighting how the project has transformed over the last year.


Drone footage of progress of the I-25 and US 50B Interchange project in Pueblo.

2026 Construction Lookahead

Anticipate impacts to traffic through the remainder of the project as Phase 1 (the offline portion) comes to completion in early 2026. The remaining phases will require numerous traffic pattern changes to complete the project.

  • In February/March, crews plan to shift northbound I-25 traffic to the east and southbound I-25 traffic to the west to work on the construction of the new mainline I-25 alignment
  • As bridge construction progresses, work will begin in spring 2026 on the remaining portion (the western half) of the new US 50B over I-25 structure, which will require temporary closures of I-25 for girder placement and bridge deck pours
  • Crews will continue constructing the new 29th Street on- and off-ramps, the I-25 collector-distributor roads and the northbound I-25 bypass road. Watch for shifting lane configurations as crews complete paving operations on these new ramps and roads
  • Construction on the sound wall adjacent to southbound I-25 between 29th Street and US 50B is scheduled to begin in early 2026
  • Westbound US 50B traffic will move to the new alignment just north of the old US 50B interchange as early as July 2026. Eastbound US 50B traffic will move to the new alignment towards the end of 2026 or the beginning of 2027
  • The realignment of Chinook Lane will be complete in late spring or early summer 2026

What is a DDI?

The DDI design was selected for this location to address congestion, improve safety and add multimodal facilities that will allow for a safer and more comfortable travel experience for cars, pedestrians and cyclists. To access the project’s DDI renderings and to learn more, please visit the I-25 and US 50B DDI project webpage.

About the Project

Work on the $114 million I-25/US 50B Interchange project began in December 2024. During construction, crews will build five new bridge structures, retaining and noise walls, roadway and ramp reconstruction, embankment, safety improvements, drainage and erosion control. Once complete, the interchange will be located just north of the current interchange and will operate as a diverging diamond interchange to improve drivability and provide safer driving conditions for motorists. The project is scheduled for completion in early summer 2027.

Aerial photo from west of the I-25/US 50B Interchange construction site
Aerial photo from west of the I-25/US 50B Interchange construction site in Pueblo.

Project Information

For additional information about this project:

Know Before You Go

Travelers are urged to “know before you go.” Gather information about weather forecasts and anticipated travel impacts and current road conditions prior to hitting the road. CDOT resources include:

Remember: Slow For The Cone Zone

The following tips are to help you stay safe while traveling through maintenance and construction work zones.

  • Do not speed in work zones. Obey the posted speed limits.
  • Stay Alert! Expect the unexpected.
  • Watch for workers. Drive with caution.
  • Don't change lanes unnecessarily.
  • Avoid using mobile devices such as phones while driving in work zones.
  • Turn on headlights so that workers and other drivers can see you.
  • Be especially alert at night while driving in work zones.
  • Expect delays, especially during peak travel times.
  • Allow ample space between you and the car in front of you.
  • Anticipate lane shifts and merge when directed to do so.
  • Be patient!

Download the COtrip App!

The new free COtrip Planner mobile app was designed to meet the growing trend of information on mobile and tablet devices for the traveling public. The COtrip Planner app provides statewide, real-time traffic information, and works on mobile devices that operate on the iOS and Android platforms. Visit the Google Play Store (Android devices) or the Apple Store (iOS devices) to download!