I-25 Exit 11 Interchange Improvements

Work this Month
January 1 - 27, 2023

This month, crews will wrap up the project and all ramps will be open to the traveling public.

  • Work includes removing temporary barrier, installing guardrail and restriping I-25
  • Work at the interchange includes final grading, milling, paving, concrete pours, flatwork, standing poles and landscaping.

CDOT and contractor Flatiron thank the area businesses and traveling public for their understanding during the period of construction while they worked to improve traffic flow and safety at this important junction on I-25.

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.

Drone view of new interchange at Exit 11 showing new bridge and roundabouts and removed old bridge. Photo Phil Hull
Drone view of new interchange at Exit 11 showing new bridge and roundabouts and removed old bridge. Photo Phil Hull

Project Facts

  • Cost: $12.6 Million
  • Contractor: Flatiron Construction Corp
  • Timeline: July 20, 2021 to Jan. 27, 2023
  • Location: I-25, Exit 11 south of Trinidad

I-25 Exit 11 Trinidad Project Map

Project Work Zone Map (Click image to enlarge)


Work Schedule

  • Work began on July 20, 2021 with an estimated completion date of January 27, 2023.
  • Current working hours are 7 a.m. to 6:30 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