Northbound CO 157 (Foothills Parkway) closures continue through this week and weekend

Travel Advisory

April 15, 2026 - Northeastern Colorado - Full closures at Pearl Street to take effect Friday night through Sunday morning

Boulder - The Colorado Department of Transportation and its contract partner, ACME Concrete Paving Inc., advises motorists to expect continued overnight lane and full closures on northbound Colorado Highway 157 (Foothills Parkway) at Pearl Street this week and weekend as crews complete ongoing concrete panel removal and replacements.

The full closure is required to maintain the safety of motorists and the project team while decreasing the duration of overall impacts to the traveling public.

Traffic Impacts

\Wednesday and Thursday nights, April 15 to16, 7 p.m. to 7 a.m.

  • Northbound CO 157 will be reduced to a single through-lane.
  • The Pearl Street on-ramp to northbound CO 157 will be closed.
  • Motorists will be detoured via Pearl Street west to 30th Street or east to 55th Street, then north to Valmont Street to access the on-ramp.
  • No impacts are expected during daytime hours Wednesday through Friday.

Friday, April 17, at 9 p.m. through Sunday morning, April 19, at 4 a.m.

  • Full closure of northbound CO 157 at Pearl Street goes in effect.
  • Traffic will detour off CO 157 at the Pearl Street exit, continue across Pearl Street and re-enter via the northbound on-ramp.
  • Southbound lanes will remain open.

Sunday morning, April 19, through Monday evening, April 20, 4 a.m. to 8 p.m.

  • Northbound CO 157 will be reduced to a single through-lane until 7 a.m. Monday.
  • The Pearl Street on-ramp to northbound Colorado Highway 157 will remain closed with the same aforementioned detour in place until 8 p.m. Monday.

Motorists traveling northbound on CO 157 and those using Pearl Street should expect up to 15 minute delays. Drivers are encouraged to use alternate routes over the weekend to avoid congestion.

Uniformed traffic control officers will be on-site to assist with traffic flow. Drivers should slow down, watch for workers and equipment and maintain safe following distances.

Visit COTrip.org for real-time lane closure updates and road conditions on this project and others throughout the state.

Map of the northbound road closure on CO 157 over Pearl Parkway and detour route
Map of the northbound road closure on CO 157 over Pearl Parkway and detour route.



Map of the Pearl Street to northbound CO 157 on-ramp closure and detour route.
Map of the Pearl Street to northbound CO 157 on-ramp closure and detour route.

Project Contact Information

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 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!