Boulder Open Space Transmission Line Construction

Project completion set for November

Project Overview

Xcel Energy is completing replacement of 33 structures and almost four miles of an existing 115 kilovolt (kV) transmission line located on land managed by the City of Boulder’s Open Space and Mountain Parks (OSMP) and Utilities Departments. Completion  of the rebuild project was originally scheduled for late September; however, work was delayed due to construction challenges and construction crews being needed to respond to several natural disasters around the state, including a large wildfire and a tornado. Construction is expected to be completed in November 2018. Xcel Energy apologizes for the construction delay and appreciates your patience. 

The four-mile section of line is located southwest of the city between Boulder Canyon Drive on the north and Eldorado Springs Drive on the south. The work is required to maintain  the transmission line and ensure continued electric reliability for you and others in the area. During construction, we will occasionally need to temporarily close access to OSMP trails, including Bear Canyon. For everyone's safety, please comply with the closures.

View project map.

Project Construction

Helicopters are being used to move equipment and materials and to minimize the construction footprint. Helicopters will continue to carry equipment and materials to and from staging sites located on Thomas Lane (near Highway 93) and near Kossler Reservoir (off Flagstaff Road).  We will use existing trails to access our right-of-way via limited ATV and vehicular use, as approved by the City of Boulder. 

Contact Us

If you have a question or comment regarding the Boulder Open Space transmission project rebuild please send an email to or call 303-571-7089. More information on the project is available at