Crews will perform CO 159 paving operations south of San Luis next week

Travel Advisory

Sept. 3, 2025 - Southwestern Colorado - Plan for brief delays and slower speeds Sept. 9 and 10

Costilla County — Beginning Tuesday, Sept. 9, the Colorado Department of Transportation will complete two-day paving operations on Colorado Highway 159 between San Luis and the Colorado - New Mexico state line. Tuesday's operations will occur between Mile Points 2 and 4 and Wednesday's operations will move north between MPs 6 and 7. Motorists can expect full stops, alternating traffic guided by pilot cars and up to 15 minute delays from 7 a.m. to 7 p.m. each day.

Motorists entering the highway from a driveway or intersection must wait for a pilot car before proceeding with the flow of traffic

Traffic Impacts

Daytime work hours range from 7 a.m. to 7 p.m., Sept. 9 through 10. Traffic impacts include:

  • Motorists should plan for 10 to 15 minute delays
  • Expect one-lane alternating traffic guided by a pilot vehicle
  • 40 MPH speed reduction will be enforced in the work zone
  • Motorists entering the highway from a driveway or intersection must wait for a pilot car before proceeding with the flow of traffic

All work is weather-dependent. Motorists are encouraged to check the most current traffic impacts on COtrip.org.

Colorado Department of Transportation Highway Travel Alert map of paving operations on CO 159 between San Luis and the Colorado - New Mexico state line taking place September 9 and 10 between 7 a.m. and 7 p.m. each day.
Colorado Department of Transportation Highway Travel Alert map of paving operations on CO 159 between San Luis and the Colorado - New Mexico state line taking place September 9 and 10 between 7 a.m. and 7 p.m. each day.

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!