Muddy trail closures
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Other Trail Closures and Advisories
South Boulder Creek Trail closures starting August 5
Portions of the South Boulder Creek - Bobolink Trail will be closed for repair work beginning Monday, August 5 for approximately 5-6 weeks depending on weather. Closures will be in place 24 hours/day Monday - Thursday each week. The first closure beginning Aug. 5 will impact the trail north of the East Boulder Community Center. Visitors may detour around this closure on the paved path to the east. The second closure beginning when the first closure is complete will impact the trail south of the East Boulder Community Center. The first closure is expected to last around two weeks, weather dependent.
Chautauqua area trail closures starting July 22
Portions of the Baseline and Meadow Trails in the Chautauqua area will be closed in late-July while staff and volunteers complete trail repairs. The closure schedule is below:
- Baseline Trail will be closed from Bluebell Rd. to the 6th Street Connector Trail Monday, 7/22 through Friday, 7/26 from 8am - 5pm
- Meadow Trail will be closed between the 6th Street Connector and the western terminus with Baseline Trail Tuesday, 7/30 through Thursday, 8/1 from 8am - 5pm
The 6th Street Connector from Baseline Rd. to Chautauqua Trail will remain open for duration of the project.
South Boulder Creek Trail intermittent delays starting July 15
Contractors will be removing exotic trees and shrubs along South Boulder Creek between Bobolink Trailhead and South Boulder Road beginning Monday, July 15. Visitors may encounter intermittent closures lasting 20-30 minutes on the paved trail north of the East Boulder Community Center Bridge and along South Boulder Creek Trail south of the bridge while contractors move equipment up and down the trail. Contractors will have flaggers onsite to assure visitor safety. The work and possible delays are expected to last two weeks.
Vesper Trail temporary closure
OSMP will temporarily keep the new Vesper Trail and a surrounding area on Gunbarrel Hill closed to protect burrowing owls. The owls began breeding close to the new trail just as the department was completing trail construction. The area and trail closure to help protect burrowing owls could last through Thursday, October 31, a date recommended by state wildlife officials. City staff recognize community interest in accessing the new trail northeast of Boulder and will monitor nesting owls and may open it earlier than October 31 based on staff wildlife observations. Learn more why OSMP instituted this temporary closure to protect burrowing owls.
East Boulder - Gunbarrel Trail now open
The East Boulder - Gunbarrel Trail is now open. The Vesper Trail and surrounding area remains closed.
Weekday Royal Arch Trail closures
Starting Wednesday, June 12, City of Boulder Open Space and Mountain Parks (OSMP) will institute closures along the Royal Arch Trail to resume maintenance work along the popular Boulder trail. The trail will be closed from 8 a.m. to 5 p.m., Monday through Thursday. There are no trail closures on Friday, Saturday and Sunday. Weekday trail closures are expected to be in place through early September. OSMP trail crews will continue work to rebuild the area along Sentinel Pass, near the top of the Royal Trail, which leads to the “Royal Arch” formation.
Boulder Star Area closure
The City of Boulder reminds everyone to view the Boulder Star from afar as it remains closed. No designated trail currently leads to the Boulder Star. Learn more about viewing the Boulder Star from afar.
Marshall Fire-related trail restrictions
On-trail-use-only regulations in the Marshall Mesa area continue to be enforced as the area has changed since the Marshall Fire and hazards may be present. Some properties affected by the Marshall Fire remain closed while staff monitor ongoing ecological and agricultural needs on those properties.
Creek closures to limit spread of invasive mudsnails
The City of Boulder has closed access to South Boulder Creek at the South Mesa Trailhead to prevent the spread of a highly invasive aquatic species, New Zealand Mudsnails (NZMS). The South Mesa Trailhead and the Mesa Trail will remain open. Learn more about the NZMS closures.
Rock Island 1 in Boulder Canyon closed
Rock Island 1 is closed. The rock fractured and part fell onto the Boulder Canyon Creek path. Sections of the remaining rock have been evaluated as unstable so it is closed until recommended bolting can be completed.