The Colorado Department of Transportation and Kiewit Infrastructure Co. will open Highway 34 in the Big Thompson Canyon for the Easter Holiday. The Highway will be reopened from mile points 77 - 80 to all traffic from 4 p.m. Saturday, April 15 to 8:30 a.m. Monday, April 17.

Motorists will be stopped once at a traffic queue, and follow a pilot car through the closure area, where there is a controlled single lane. Motorists should expect a 15- 20 minute wait, depending on the number of cars in the queue. The 3 mile stretch will close again on Monday, April 17 at 8:30 a.m.

On Oct. 17, 2016, the canyon closed to all through-traffic to maintain public safety during heavy rock blasting work. Since then, noticeable progress has been made, allowing for work originally scheduled for later this year to begin early. Kiewit has blasted approximately 180,000 cubic yards of rock and hauled over 225,000 cubic yards of material, since closing the highway. US 34 Big Thompson Canyon’s roads and bridges were heavily damaged during the 2013 floods.

Canyon Updates

For updates to this project, the public may call (970) 667-1005 or visit

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