I-25 Exit 11 Interchange Improvements

Work this Week: 
October 2 - 8, 2022

Special Travel Advisory

Oct. 6-7 - County Road 69.1

  • Two-way traffic on County Road 69.1 within the work zone will be reduced to a single lane during working hours for two days - Thursday, Oct. 6 and Friday, Oct. 7.
  • The closures and holds will be in place during working hours (7 a.m. to 7 p.m.).
  • During the closures, alternating traffic flows will be managed by flagger operations.
  • Motorists can expect short delays (up to 10 minutes) during these alternating traffic holds.
  • The closures are necessary while crews perform paving operations and pour concrete.

General Closures & Restrictions

  • The new Exit 11 bridge has opened to traffic and the old bridge has been removed.
  • A right lane closure is in place 24/7 from Mile Point 10 to MP 12 in both directions of I-25 at the approaches to and at Exit 11. These closures will remain until further notice.
  • Speeds are reduced from 65 mph to 55 mph on I-25 through the work zone.
  • The southbound I-25 off-ramp, the northbound on and off ramps and frontage roads are under temporary alignment while crews finish work on the roundabouts. Please exercise caution and drive slowly.
  • Construction signs and devices exist throughout the interchange to safely route traffic until project completion.

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 newly constructed bridge and west roundabout with Trinidad Lake in the background. Photo Philip Hull
Drone view of newly constructed bridge and west roundabout with Trinidad Lake in the background. Photo Philip Hull

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)


Work Schedule

  • Work began on July 20, 2021 with an estimated completion date of November 2022.
  • 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.