I-25 Exit 11 Interchange Improvements

Work this Week: 
May 29 to June 4, 2022

During this short holiday week, crews will finish construction of the new bridge structure's approach slabs, work on sidewalks, and prep for paving. Other work includes constructing the southbound onramp, finishing work on the west roundabout and retaining walls, and flatwork.

Motorists can expect:

  • No work will be performed on Monday, May 30 in observance of Memorial Day.
  • Single right lane closures are in place 24/7 in both directions of I-25 from Mile Point 10 to MP 12
  • The on and off ramps at Exit 11 are under detour configuration
  • Caution is advised
  • All constructions schedules are weather dependent and subject to change
Wide view of west roundabout under construction. Photo courtesy Aaron Westhoff, Yeh & Assoc.
Wide view of west roundabout under construction.
Photo courtesy Aaron Westhoff, Yeh & Assoc.

About the Project

This project entails upgrading the infrastructure and making safety, traffic flow and aesthetic improvements at I-25/Exit 11 just south of the City of Trinidad. Specific work includes ramp and lane widening and building crossovers; bridge replacement; building roundabouts to improve traffic flow; building retaining walls; improving access to the Port of Entry; retrofitting curb ramps for ADA compliance; adding guardrail and other safety features to the new bridge for pedestrians and cyclists, and incorporating urban streetscapes and new lighting and signage.

Project Facts

  • Cost: $12.6 Million
  • Contractor: Flatiron Construction Corp
  • Timeline: July 20, 2021 to late 2022
  • Location: I-25, Exit 11 south of Trinidad

I-25 Exit 11 Trinidad Project Map

Project Work Zone Map (Click image to enlarge)

Panorama girder placement

Girders being placed on the new bridge superstructure over I-25 at Exit 11 on Jan 4, 2022.

Work Schedule

  • Work began on July 20, 2021 with an estimated completion date of late 2022.
  • Current working hours are 7 a.m. to 5 p.m.
  • No weekend work is expected.

Traffic Impacts

  • 24/7 right lane closures are in place in both directions of I-25 from Mile Point 10 to MP 12 which is one mile south and north of and at Exit 11.
  • A 17-foot width restriction exists within the project limits on I-25 and at the on and off ramps at Exit 11 until further notice.
  • The southbound I-25 off ramp at Exit 11 is under a temporary detour configuration with traffic routed onto Toupal Drive, which is adjacent to the existing off ramp.
  • Access to the on ramp to southbound I-25 at Exit 11 is also under a temporary onsite detour configuration via County Road 69.1.
  • The northbound I-25 on and off ramps are also under temporary onsite detour configuration onto the frontage roads. Traffic is being shifted to accommodate ramp, roundabout and other construction.
  • Guests exiting the Rodeway Inn are being routed onto CR 69.5 (unmarked road just south of the hotel entrance) behind the hotel, then back to the Santa Fe Trail to a new four way stop intersection. From there, signage will show the routes to north/south ramps.
  • Motorists should exercise caution entering and exiting ramps and follow the signs.
  • 12-foot lanes continue to exist in both directions of County Road 69.1, Toupal Drive and CR 69.3 (Santa Fe Trail).
  • Access to businesses and the Port of Entry will be fully maintained.
  • Lane closures and other traffic notices are posted weekly on COTrip.org.