East Bay Regional Park District Completes Autumn Trailhead and Creek Bridge Repairs at Las Trampas Wilderness Near Alamo

Rangers and heavy-equipment trail crews with the East Bay Regional Park District (EBRPD) have completed their late-October sequence of creek-bridge inspections, gravel staging-lot regrading, and erosion-control work across the 5,827-acre Las Trampas Wilderness Regional Preserve bordering Alamo, Camille Avenue trail connectors, and Bollinger Canyon. Reviewed during an October 2026 park operations briefing, the preventative maintenance prepares steep canyon switchbacks and emergency fire roads for the upcoming winter rainy season. Cooler late-October temperatures also bring peak hiking and horseback riding turnout across the preserve.

Centered on the rugged geological uplift of Rocky Ridge (elevation 2,024 feet) and Las Trampas Ridge (elevation 1,827 feet), the wilderness preserve forms the western scenic backdrop of the San Ramon Valley opposite Mount Diablo. Throughout October, park district maintenance teams cleared leaf litter and rockfall from cross-drain culverts along the paved Rocky Ridge View Trail, checked timber decking and handrails on seasonal footbridges spanning Bollinger Creek, and re-graded earthen water bars on the Chamise, Trapline, and Devil's Hole trails.

At the main Bollinger Creek Staging Area at the northern end of Bollinger Canyon Road—which provides dedicated turnaround space and hitching posts for Alamo and Danville equestrian trailers—crews refreshed crushed-granite parking stalls and inspected livestock water troughs. Rangers also reminded autumn dog owners and hikers to carry extra drinking water, respect cattle-grazing gates, and yield the right-of-way to horses on narrow hillside singletracks.

Las Trampas Wilderness Regional Preserve is open daily from 8:00 a.m. to 6:00 p.m. during late-autumn hours with free parking and trail access. Hikers and equestrians can download georeferenced PDF trail maps or check wet-weather mud advisories online at ebparks.org or by calling (888) 327-2757.