Boulder Canyon Drive/CO 119 is undergoing construction to repair 2013 flood damage. The improvement project will also resurface and widen the road. As part of this project, the Boulder Canyon Trail will be extended to Chapman Drive with two additional bike underpasses. There will be road delays during construction with one-way traffic stoplights. The project began in March 2019 and is expected to be completed by Spring 2021.
Update: 3/6/2021 – The Boulder Canyon Trail is back open from Boulder to Fourmile Canyon drive. Normal winter trail conditions will exist, so please watch for snow and ice. The portion of the trail west of Fourmile to Chapman Drive will open in later in March.
You can subscribe to text alerts about the canyon closures by texting CO119 to 21000 or learn more information about the project and see this week’s closures.