Lefthand Canyon flood damages 

Lefthand Canyon Reconstruction

Major travel restrictions in place for both motor vehicles and cyclists (see below). Sign up for the project listserv to stay up-to-date on all work and travel impacts.  

Weekly Travel Delay Information - Wednesday, Oct. 26 to Wednesday, Nov. 2 (NO WORK ON WEEKENDS)

Current Activities - James Canyon to Lickskillet Road/Spring Gulch
    • Paving will not resume until Monday, Nov 7 - Expect delays & flaggers 
    • Excavation west of Lee Hill/east of Glendale Gulch - Expect delays
    • Road is either milled or gravel in short stretches (mostly paved) - Rough patches here and there - Drive slow and use caution
    • Lickskillet Road and Spring Gulch culvert installs underway. Shoofly created to move people around work zone with minimal delays. 
    • Spring Gulch culvert install underway. One lane of alternating traffic in this spot. Use caution. 
    • SOON - Glendale Gulch Culvert install - Shoofly to be created to move travelers around the site
Current Activities - Between US 36 and James Canyon
  • Road being raised several feet approximately 1.3 miles west of US 36 
    • Expect long delays - up to 1 hour - road will open every hour on the hour between 7 a.m. and 5 p.m.
  • Paving complete except for short section at mile 1.3
  • Punch list items being completed - may require flaggers to safely accommodate efforts
Overall Project Schedule:
  • Begin Work - December 14, 2015
  • End Work - November 2016
  • All work is weather and contractor dependent


Stay Informed:


During the September 2013 flood event, numerous sections of Lefthand Canyon Drive were either damaged or completely destroyed. In addition, Left Hand Creek was completely altered throughout the canyon. Soon after the flood, Boulder County Transportation worked diligently to create temporary "winter roads" that would allow residents and service providers access to homes and properties. 

In the summer of 2014, the damaged sections of Lefthand Canyon Drive received temporary paving aimed at making the area safer for travel while engineering teams worked on final designs for permanent repairs. 

In the spring of 2015, the Transportation Department partnered with Central Federal Lands (CFL - a division of the Federal Highway Administration) on the final designs and construction of Lefthand Canyon Drive and adjacent sections of Left Hand Creek.   

The CFL/Boulder County partnership provided an opportunity to improve the design and accelerate the construction schedule. The project includes not only the reconstruction of the damaged road sections, but also better shoulders to improve safety for everyone who uses the canyon, four new bridges where the road crosses the creek and restoration of Left Hand Creek in areas adjacent to the road, which will create a vast improvement of the ecological health of the creek. 

Additional Project Information:

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