Repairs begin on the westbound C-470 bridge over I-70 that was damaged last month by a tractor trailer hit

Travel Advisory

January 29, 2024 - Denver/Central Colorado - Drivers should expect overnight double lane closures on westbound I-70 through early March 2024

Jefferson County - Repairs started this week on the westbound C-470 bridge over westbound Interstate 70. The outside edge of the bridge was damaged last month on Dec. 8 when a tractor trailer with an oversized load tried to drive under the structure and got stuck.

The work involves repairing three girders and requires the following lane closures:

Westbound I-70 under the westbound C-470 bridge

  • Single lane closure from 6 a.m. to 4 p.m., Monday - Thursday, Jan. 29 to Feb. 1
  • Single lane closure 6 p.m. and then a double lane closure from 8 p.m. to 6 a.m. Sundays through Thursdays beginning the week of February 4 until the project is finished in early March 2024. Traffic impacts should be minor.
  • There could be single lane closures from 6 a.m. to 4 p.m. during the week if necessary, but most of the work is expected to take place overnight.

Westbound I-70 off ramp to C-470

  • Closed when there are double lane closures on westbound I-70 (overnights Sunday through Thursday)

Westbound C-470 bridge over I-70

  • Ongoing shoulder and lane closure until the bridge repairs are completed

Speeds are reduced to 45 mph while the lane closures are in place. The schedule above could change depending on the weather. Motorists are urged to drive with caution through the work zone.

The damaged asphalt on westbound I-70 under the bridge will be patched. It will be repaved when the weather gets warmer in the spring.

The Colorado Department of Transportation is working with Lawrence Construction on the project. The cost of the repairs is $1.8 million.

Project Information

For additional information about this project:

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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