US 160 & CO 370 Resurfacing and ADA Ramps in Monte Vista and Alamosa

About the Project:

Rio Grande and Alamosa Counties — The Colorado Department of Transportation announces improvements to US Highway 160 and Colorado Highway 370 in Rio Grande and Alamosa Counties beginning this week. The project will improve US 160 for approximately 16 miles east of Monte Vista from mile point 215 to 226. Additionally, four miles of CO 370 will be improved between MP 4 and MP 8. CO 370 is located south of the US 160 corridor.

The project includes resurfacing the roadway and will incorporate shouldering improvements, erosion control, guardrail replacement, concrete curbing, signing, and final striping. Pedestrian features will also be constructed at intersections within the communities of Monte Vista and Alamosa. Enhancements include the construction of new concrete curbs and Americans with Disabilities Act compliant ramps in both communities, as well as the installation of reflective flashing beacons at Lyell Street in Monte Vista.

“The project will enhance safety for San Luis Valley travelers on this busy two-lane highway,” said CDOT Regional Transportation Director Julie Constan. “When this project is completed, motorists will find a smoother roadway surface with high visibility markings and stabilized shoulders. The pedestrian improvements will enhance safety for those walking or biking within the Monte Vista and Alamosa communities.”

The project was contracted to APC Southern Construction, of Golden, for $10.4 million and is expected to be completed in October 2022.


Work Schedule

  • Project work activity will take place during daylight hours, Monday through Friday. No weekend work is currently anticipated.

Traffic Impacts

  • Motorists will encounter brief closures with single lane alternating traffic and should allow for travel delays of up to 15 minutes. Flagging personnel will be on sight to direct travelers. Speed limits will be reduced to 40 mph in the project work area. During work hours motorists are asked to use caution when approaching and driving through the work zone.
  • See the flyer regarding the railroad crossing detour on the left side of this page.

Project Facts

  • Cost: $10,440,648
  • Contractor: APC Southern Construction
  • Timeline: April - late October 2022
  • Location: US 160 between Monte Vista and Alamosa, and within both town limits (Grande and Alamosa Counties)

US 160 CO 370 Resurfacing project map