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OSMP Projects

The City of Boulder’s Open Space and Mountain Parks (OSMP) Department will highlight large projects for 2018 on this page. 

Xcel Transmission Line Replacement Project

Starting as early as April 23, OSMP visitors will encounter temporary delays and closures southwest of Boulder while Xcel Energy uses helicopters and other heavy equipment to replace 33 towers and a 4-mile segment of their electric transmission line. This work will occur south of Boulder Canyon Drive and north of Eldorado Springs Drive, and is expected to be completed by the end of September. Because of the rugged location of transmission lines in Bear Canyon, longer-term trail closures in the area are likely to occur beginning in August. Xcel’s work will occur along its right-of-way on city open space and is being conducted to ensure federal compliance and maintain electric reliability in the area. If you have a question or comments, please send an email to Larry Claxton or call him at 303-571-7089. More information is also available on Xcel's website.

View a map of the project area pdf.

OSMP Master Plan

OSMP Master Plan logo

Open Space and Mountain Parks has kicked off a long-term effort to establish a community-supported plan that will guide the management of the community’s open space over the next decade and beyond. Share your comments now and sign up for email updates. Our first "window of engagement" for the master plan will close on Friday, March 30.

Trail Projects

South Foothills Trail - Project Complete

Status Update – 5/1/18

May 1, 2018: The Foothills South Trail flood repair project is complete! Construction-hours trail closures have been lifted – enjoy the trail, and thank you for your patience as OSMP worked through one of our last trail repair projects from the 2013 flood!

Foothills South trail repairsRunner enjoying repaired trailRepairs complete along Foothills South

April 19, 2018: Foothills South Trail repairs are coming along – the project is over half complete! Here are some before-and-after photos of the trail, showing post-flood trail damage (September 2013) compared to recent trail repairs.

Foothills South before and after repairs

Before and after trail repairs














Completed repairs along a section of Foothills South Trail April 10, 2018: Recent snow and rain have slowed trail repairs a bit, however we’re making progress on the north end of Foothills South Trail, just south of Four Mile Creek.  The project is about one-third complete.





March 19, 2018: Trail repairs are under way! Initial trail grading and re-surfacing are occurring on the south end of the project. Construction along the trail

Construction equipment along the trail

March 7, 2018: The project began on Wednesday, March 7. The Foothills South Trail from the Utica Ave. access to Four Mile Canyon Creek is closed 7 am-5 pm Monday-Friday.

Boulder Falls

OSMP is working to repair Boulder Falls, and this repair project is about 75 percent complete. The department hopes to reopen the area before or on the Fourth of July. During this repair project, OSMP is rebuilding gabion walls – which are rock baskets used to catch sediment coming off the hillside – and conduct repairs to stabilize the trail. The project also will improve trail tread. Boulder Falls remains closed. Because of equipment needed to conduct these repairs, there will be no parking available at Boulder Falls pull offs along Boulder Canyon.

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