Night closures of CO 119 Boulder Canyon tunnel planned Nov. 6-10

Travel Advisory

November 2, 2022 - Northeastern Colorado - The road will have to be closed nightly from 9 p.m. to 5 a.m. from Nov. 6-10

Boulder County — In order to perform much needed repairs and other fixes to the Boulder Canyon tunnel on CO 119, the road will have to be closed nightly from 9 p.m. to 5 a.m. from Nov. 6-10.

The work planned on the tunnel will repair both portals and areas of the interior lining that were noted as critical according to a recent inspection. Rock scaling around each of the portals will also happen during this time to ensure the future safety of the traveling public on the roadway.

To set up the closure, the road will be reduced to one lane from 8-9 p.m. each night with flaggers. Delays are expected to be minimal at that time. During the closures, there are some detour routes (i.e. CO 72). Drivers who need to travel during the closure times are encouraged to find alternate routes.

Emergency responders will have access throughout. Local traffic up to the tunnel on each side will be allowed in.

Boulder Canyon tunnel on CO 119

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!

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