Marin County Parks and Open Space Department

2017 Road and Trail Projects

The Marin County Open Space District (MCOSD) road and trail projects are part of a science-based, public inclusive, comprehensive Road and Trail Management Plan (RTMP) which addresses the complex challenges of MCOSD roads and trails. The plan was developed over the course of four years on the basis of extensive outreach and public input. The MCOSD road and trail projects are designed and implemented to reduce the environmental impact of the road and trail network and enhance visitor experience and safety. For information about 2016 projects, visit the Road & Trail Projects Archive.

Hunt Camp Trail Improvement Project
California Environmental Quality Act Documentation
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POSTED ON: JULY 13, 2017

The Marin County Open Space District (MCOSD) has approved the proposed improvements to the Hunt Camp Trail in the Gary Giacomini Open Space Preserve. The project is moving forward, including the construction of two trail reroutes (Reroute 1 and 2) on Upper Hunt Camp and the installation of wet crossings and drainage to support incorporation of the trail into the MCOSD trail system as a hiker/biker trail. These improvements would ensure the trail is properly drained and would minimize environmental impacts, while improving user safety. The project proposes to establish a new connecter trail for hikers and cyclists, which would be constructed from the Lower Hunt Camp Trail to Manzanita Fire Road to respect private property rights and reduce unsanctioned trail use through bands of chaparral. Additionally, a small portion of the existing Hunt Camp Trail, connecting to Juniper Avenue, would be designated as hiking only, and would continue to provide a neighborhood connection to open space. To further reduce environmental impacts in the Gary Giacomini Preserve, the proposed project includes the decommissioning of over 6,000 linear feet of unsanctioned trails to reduce erosion and habitat fragmentation.

The MCOSD has completed a CEQA consistency analysis to determine if the project requires supplemental environmental review. The consistency analysis concluded that the project is consistent with the Road and Trail Management Plan Environmental Impact Report (EIR) because it would not result in new or more significant impacts from project changes, changed circumstances, or new information. Based on this document, the MCOSD determined that it is not necessary to prepare a new EIR or negative declaration. The consistency analysis, notice of determination and supporting documents are listed below. These documents are also available for public review at the Marin County Parks, Administrative Office, Marin County Civic Center, 3501 Civic Center Drive, Suite 260, San Rafael. For more information, contact Kristina Tierney at (415) 473-5283 or ktierney@marincounty.org

Bob Middagh and Gasline Trails
California Environmental Quality Act Documentation

POSTED ON: JULY 12, 2017

Work on the Bob Middagh Trail project began on July 11, 2017. The trail will be widened to approximately five feet, and steep segments adjusted to a more comfortable grade. Also, drainage will be improved and two failing culverts replaced to help control erosion. Funded by Measure A, this project will create a sustainable, multiuse connection between preserves when it is completed.

The Marin County Open Space District (MCOSD) has approved the proposed improvements to the Bob Middagh and Gasline Trails in the Alto Bowl Open Space Preserve. These projects are moving forward, including realigning both trails to reduce their running slopes, improving erosion control measures, replacing failed culverts, improving accessibility, and reducing safety hazards. As part of this project, the MCOSD is designating Bob Middagh Trail for hiking, biking, and equestrian multiuse.

The MCOSD has completed a CEQA consistency analysis to determine if the project requires a negative determination or environmental impact report (EIR). The consistency analysis concluded that the projects are consistent with the RTMP EIR, because they do not result in new or more significant impacts from project changes, changed circumstances, or new information. Based on this document, the MCOSD determined that it is not necessary to prepare a new EIR or negative determination. The consistency analysis, notice of determination and supporting documents are listed below. These documents are also available for public review at the Marin County Parks, Administrative Office, Marin County Civic Center, 3501 Civic Center Drive, Suite 260, San Rafael. For more information, contact James Raives at (415) 473-3745 or JRaives@marincounty.org.

Irving Fire Road Sustainability Project

POSTED ON:JULY 12, 2017

Work on the Irving Fire Road project has been completed. Marin County Parks began work on Irving Fire Road in Terra Linda/Sleepy Hollow Open Space Preserve in May 2017. This project will reduce sedimentation into the watershed and maintain safe emergency access. This project was funded by Measure A.

Horse Hill Trail Realignment and
Restoration Project

POSTED ON: JULY 12, 2017

Work on the Horse Hill Trail project has been completed. The new segment of Horse Hill Trail is closed to equestrians until further notice. Soils on the new segment of Horse Hill Trail need time to settle and compact naturally. If conditions allow, the Marin County Open Space District (MCOSD) expects to reopen Horse Hill Trail for equestrian use during spring 2018. Gasline Trail will remain open to equestrians until Horse Hill Trail is ready for equestrian use. For safety, please observe posted trail closure signs.

Marin County Parks began work in Horse Hill Preserve in May 2017. Horse Hill Trail was extended 2,000 feet. Gasline Trail will be decommissioned. The project, funded by Measure A, will improve trail safety and restore grasslands. 

Trail Decommission and Adoption:
Gary Giacomini

POSTED ON: APRIL 13, 2017

The MCOSD road and trail crew will restore habitat and adopt portions of a network of previously unsanctioned trails in the Gary Giacomini Preserve, including decommission and restoration, drainage improvements, visitor safety improvements, and adopting the historic Hunt Camp Trail as a hiking and biking accessible trail.

Timeline

Project Identified: 2015
Project Planning: 2016-2017
MCOSD Administrative Public Comment: April 13 to May 15, 2017
CEQA Process: May to June 2017
Project Determination: June 2017

Project Objectives

  • Restore over 18,000 square feet of chaparrel, redwood forest, and grassland habitat.
  • Establish a trail system that is less fragmented for wildlife and improve the sustainability of the visitor experience.
  • Reduce sedimentation entering the watershed caused by poorly performing unsanctioned trails and historic logging roads.

Project Documents

If you have questions or comments regarding this project please contact Regulatory Open Space Planner Kristina Tierney or call (415) 473-5283.

2017 Road and Trail Work Plan

UPDATED ON: MAY 8, 2017

The Marin County Open Space District (MCOSD) work plan, or project list, identifies the road and trail work proposed for implementation between late spring and fall. All projects support Road and Trail Management Plan goals-creating sustainability, reducing environmental impact, enhancing recreation, and improving safety.

Proposed projects for 2017 include:

  • Alto Bowl Fire Road Sustainability and Access Project
    Alto Bowl Preserve
    Stabilize fire road bed, replace failed culvert, and reduce erosion on Alto Bowl Fire Road.
  • Cobblestone Fire Road Sustainability Project
    Mt. Burdell Preserve
    Improve Cobblestone Fire Road for environmental sustainability.
  • Irving Fire Road Sustainability Project
    Terra Linda/Sleepy Hollow Preserve
    Improve Irving Fire Road for environmental sustainability.
  • Bob Middaugh Trail Recreation, Safety, and Restoration Project
    Alto Bowl Preserve
    Adopt multiuse policy, implement visitor safety improvements, and reduce erosion on Bob Middaugh Trail.
  • Cascade Canyon Bridges Project
    Cascade Canyon Preserve
    Install bridges and adopt a multiuse policy on a portion of the Canyon Trail, and restore upland stream bank and decommission High Water Trail.
  • Horse Hill Trail Realignment and Restoration Project
    Horse Hill Preserve
    Install Horse Hill Trail extension, restore grassland, and decommission the eroding Gasline Trail.
  • Hunt Camp Trail Sustainability and Restoration Project
    Gary Giacomini Preserve
    Adopt and improve Hunt Camp Trail, install Hunt Camp Trail/Manzanita Fire Road connector, and decommission select San Geronimo Valley social trails to protect habitat.
Highlights of the 2017 projects include:
  • Commencing multiyear restoration and monitoring processes on erosive fall line recreational trails
  • Improving critical fire road access for use by fire and emergency vehicles 
  • Augmenting bike access to single track trail by 14% 
  • Improving multiuse trail sightlines and excessively steep grades

The draft 2017 Work Plan will be presented at the Parks & Open Space Commission meeting on March 16, 2017. The Board of Supervisors will consider these projects during their June fiscal year 2017-18 budget hearings.

For more information contact Senior Natural Resources Planner Jon Campo at (415) 473-2686 and Chief of Planning and Acquisition Carl Somers at (415) 473-2820.