Canyon Road Permanent Reconstruction

Return to the Flood Recovery Website

Welcome to the Permanent Roadway Repair Website and Public Comment Form. Boulder County would like to hear your feedback on the planned reconstruction of Lefthand, James, Geer, and Fourmile Canyon drives the county is examining as part of the flood recovery effort.



Over four days in September 2013, more than 17 inches of rain fell in various parts of Boulder County, of which a large portion occurred in and around the creeks and canyons in the county foothills. 

The effect of the storm on the county's transportation infrastructure was extreme. Approximately 150 miles of roadway was damaged or completely destroyed, more than 30 bridges were damage or washed away, and countless culverts were in need of repair or replacement. 

Lefthand Canyon

Before the rain even stopped, Boulder County staff began to assess the damage and worked diligently to get the county back on its feet and to get people moving again. Crews immediately began installing temporary 'winter roads' in mountain canyons like Fourmile, Lefthand and James. This entailed hauling millions of pounds of dirt, gravel and rock back into the mountains to rebuild a road that in many places simply wasn't there anymore. Thirty-miles of this temporary roadway was installed in a matter of months, and canyon residents were once again able to access the area. 

Current Conditions

In the summer of 2014, the county paved many of the winter road sections with asphalt in order to make the roads safer to travel and easier to maintain throughout the winter months. While designed to stay together for 1- to 2-years, these repairs are not permanent. Designs for permanent roads are underway, but the timing of final construction remains uncertain due to several factors:

Boulder County does not want to simply rebuild the roads as they were prior to the storm. Improvements, where possible, to prevent the same damage from occurring the next time a flood event strikes this area is an important aspect to flood recovery. In instances where county roads can be better designed to improve the safety of travel for all modes (motor vehicles, bicycles, and pedestrians) should be taken advantage of.  
Lefthand Canyon Temporary Paving

Permanent Reconstruction Designs: We need your help

Boulder County Transportation is currently accepting feedback from the public on the design of permanent permanent repairs to Fourmile Canyon, Lefthand Canyon and James Canyon drives. Public meetings are being held in order to collect feedback, but that's not the only way to provide input:

Your input is invaluable because many of you use these roadways every day as you travel. All comments will be collected and evaluated for use. 

Public Meeting Schedule:

Fourmile Canyon Drive
Sept. 3, 2014
Meeting Materials
Lefthand & James Canyon drives
Sept. 17, 2014
Meeting Materials
Information will be posted here and released to the public as soon as details are finalized
Upper Fourmile Canyon Drive (includes Wall Street, Gold Run - Salina)
Wednesday, March 11, 2015
Project and Meeting Information
Lower Fourmile Canyon Drive
Tuesday, June 16, 2015

5:30 to 7 p.m.
Alfalfa's Market Community Room in Boulder
Meeting Materials = 30% design
Lefthand Canyon Drive & Left Hand Creek Plans for Flood Recovery Reconstruction
Tuesday, July 14, 2015
Altona Grange - 9386 N. 39th Street 
5:30 to 7:30 p.m. 
Lower Fourmile Canyon Drive
Tuesday, July 28, 2015
5:30 to 7:30 p.m.

Alfalfa's Community Room in Boulder - 1651 Broadway
Engineering team to present and discuss environmental aspects of proposed designs. Q&A will follow presentation
James Canyon Drive
Tuesday, Aug. 11
6 p.m.
Presentation of preliminary designs
Upper Fourmile Canyon Drive - Salina Junction to the West
Public Meeting 
Wednesday, Nov. 18
5:30 to 7:30 p.m.
Fourmile Firehouse
1750 Fourmile Canyon Drive
Learn More
All meeting materials/handouts are available. 

Comment Form:

Access the comment form

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