Cascade Bridges

A proposal to improve visitor safety and preserve creeks in Cascade Canyon.


Project Description

Marin County Open Space District (MCOSD) is continuing work on the Cascade Bridges Project, originally received as a public proposal from the Friends of Corte Madera Creek Watershed and the Marin County Bicycle Coalition in spring 2016. The proposed improvements would remove recreation from the creek channel, improve the visitor experience and accessibility for all trail users, and enhance the sustainability of the trail.

The project would install two recreational bridges and implement improvements to the Cascade Fire Road to allow trail users to safely use the trail during wet weather without crossing through San Anselmo Creek. The project would also implement safety improvements and a change in use on a segment of the Canyon Trail from hiker/horse to multiuse.

The project includes decommissioning the High Water Trail, which is dangerous and erosive, as well as a deposition source of fine sediments into San Anselmo Creek, which can can impede the spawning success of rainbow trout and steelhead.


  • Provide safe year-round access to the interior of Cascade Canyon Preserve.
  • Remove recreation from the creek channel.
  • Improve trail safety.
  • Improve visitor experience.
  • Reduce trail erosion and fine sediment deposition to the Corte Madera Creek watershed.
  • Reduce trail density and habitat fragmentation.


  • 2016: Project Identified
  • 2016–18: Project Planning
  • Summer–Fall 2018: Project Description
  • Spring–Summer 2019: CEQA Review