County Bridge Program
The County has received approximately $15 million in federal funding, Highway Bridge Program Funds, to replace/rehabilitate five bridges in various parts of Marin County. The funding is administered through the Caltrans Local Assistance Program.
These federal grant funds will be used to conduct environmental studies, perform public outreach, secure permits, perform right-of-way services, develop engineering plans, and to construct each of these bridges.
For more information please visit the project websites:
- Mountain View Road Bridge is located in Lagunitas over San Geronimo Creek at the intersection of Sir Francis Drake Blvd. Visit the project web page for more information.
- Nicasio Valley Road Bridge is located over Arroyo Nicasio Creek near the intersection with Lucas Valley Road. Visit the project web page for more information.
- Sir Francis Drake Blvd. Bridge is located in Point Reyes Station over Olema Creek just west of State Highway 1. Visit the project web page for more information.
- San Antonio Bridge is located in northernmost Novato over San Antonio Creek at the Marin-Sonoma County line. Visit the project web page for more information.
- Mt. Lassen Drive Bridge is located in Marinwood over Miller Creek near the intersection with Lucas Valley Road. Visit the project web page for more information.
Frank Valley Road Improvements near Muir Woods National Monument
Frank Valley Road/Muir Woods Road is a two-lane roadway that provides connectivity between Muir Beach, Mill Valley and the park lands. For reference, Frank Valley Road becomes Muir Woods Road north of Redwood Creek Bridge near the National Monument (see map).
The County has been approved for a $5.2M Federal Lands Access Program (FLAP) grant for the resurfacing and rehabilitation of 2.48 miles of Frank Valley Road from the Muir Woods National Monument to State Route 1 in Muir Beach.
The stretch of Frank Valley Road that is being rehabilitated is the only roadway providing access to the Muir Woods National Monument from the south. This project will improve both safety and function for 2.48 miles on the roadway through pavement rehabilitation, roadway shoulder stabilization, drainage improvements, roadway widening, and improved signage and striping. The road improvements will maintain the characteristics of a local, two-lane roadway to minimize environmental impacts to Redwood Creek.
In conjunction with the road improvements, an additional $2.5M grant will be utilized to replace and realign Redwood Creek Bridge, south of the National Monument entrance, as it has been classified as structurally deficient, functionally obsolete and in need of replacement. The proposed new bridge alignment will meet current road geometry and safety standards.
The project is being led by the Federal Highway Administration (FHWA).
|November 9, 2016
|April 18, 2017
||Draft Environmental Assessment / Initial Study (EA/IS) available for 30-day public review & comments
|November 2020 (anticipated)
||EA/IS Public Meeting
|June 2021 (expected)
||Environmental Permit Completion
For more information on the project including specifics relating to the environmental process please visit the National Park Service webpage.
Muir Woods and Frank Valley Roads Parking Restrictions & Muir Woods National Monument Reservations
The County of Marin is working with the National Parks Service (NPS) on parking restrictions along Muir Woods and Frank Valley roads, and parking restriction associated with the reservation system for Muir Woods National Monument. A 2015 Memorandum of Understanding detailed the management of parking, access, and implementation of a NPS reservation system.
In January 2018, NPS implemented a parking reservation system that supports management of visitation to levels that meet park goals for safety, natural resource preservation, visitor experience, and public access. The reservation system provides a long-term measure that will allow the park to work with visitors in advance of their arrival so that congestion, and its related impacts, can be minimized and the quality of the experience enhanced. NPS has also enhanced the Muir Woods Shuttle program to support access to the national monument. Parking restrictions such as traffic barriers, bollards and no parking zones have been implemented along Frank Valley Road and Muir Woods Road. Additional restrictions may be initiated to support the NPS reservation system.
NPS and the County of Marin have committed to a phased elimination of parking outside of the monument's boundaries. The NPS is currently working on a Sustainable Access Project (SAP) within the park to redesign and reorganize parking in Muir Woods. More information on the project can be found on NPS' project page and additional information on NPS' other projects can be found on their Redwood Renewal program page.
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Sir Francis Drake Boulevard Improvements in Point Reyes National Seashore
The Federal Highway Administration Central Federal Lands Highway Division (CFLHD), in cooperation with Marin County and the National Park Service (NPS), announces the availability for public review and comment of the Supplemental Environmental Assessment/Subsequent Initial Study (SEA/SIS) for Sir Francis Drake Boulevard Road Improvements. The SEA/SIS meets CFLHD's obligations as the lead agency for this project under the National Environmental Policy Act (NEPA) and Marin County's obligations under the California Environmental Quality Act (CEQA).
The Supplemental Environmental Assessment/Subsequent Initial Study (SEA/SIS) with proposed Mitigated Negative Declaration for the Sir Francis Drake Boulevard Improvement Project is available for public review and comment from June 19, 2018 to July 18, 2018.
The Subsequent Environmental Assessment with Finding of No Significant Impact and Supplemental Initial Study with Mitigated Negative Declaration is available here.
- Environmental Subsequent Study – PUBLIC COMMENT PERIOD OPEN NOW
- Finalize Mitigation Plans & Permits – Summer 2018
- PG&E Pole Relocation Construction – Fall 2018
- Advertise Project – Winter 2018/19
- Begin Construction – Spring 2019
- Complete Construction – Fall 2020
Marin County was awarded $17.7 million in federal funds through the Federal Lands Access Program (FLAP) for improvements to approximately 12 miles of Sir Francis Drake Boulevard in Point Reyes National Seashore (the Seashore) in Marin County. As part of the FLAP requirements, the County of Marin is also contributing approximately $2 million in additional local funds. The FLAP is administered by the Federal Highway Administration (FHWA).
The purpose of the proposed improvements is to restore the structural integrity of the road and enhance safety for all users while reducing ongoing maintenance requirements. Pavement along Sir Francis Drake Boulevard in the Seashore is deteriorating and badly oxidized, heavily patched, lacks shoulder support, and some sections have significant cracking and edge damage. Seasonal flooding of the creek near Schooner Bay can close the road to traffic for several days. Raising and realigning this short segment of the road has been proposed to help prevent annual flooding and minimize wetland impacts in the area where the adjacent tributary channel has aggraded and is now nearly at the same elevation as the road. The proposed improvements would address these issues through new asphalt pavement, new striping and signs, replacement of two cattle under-crossings, replacement of cross culverts, and implementation of other safety features to meet current design standards.
FHWA, in cooperation with Marin County and the National Park Service (NPS), is conducting a planning and environmental review process in conformance with both the National Environmental Policy Act (NEPA) and the California Environmental Quality Act (CEQA). As a result of the NEPA and CEQA process, a joint EA/IS was prepared that analyzed these improvements to the road and was distributed for public review in July 2015. A Finding of No Significant Impact/Mitigated Negative Declaration (FONSI/MND) was issued in August 2015, Download EA/IS.
Since issuance of the 2015 FONSI/MND, improvements have been proposed and evaluated under this SEA/SIS include replacing the existing culverts under SFDB and Schooner Creek with a single-span bridge, and restoring and stabilizing approximately 710 feet of SFDB that has severely eroded. To compensate for permanent wetland impacts as a result of roadway improvements, part of the parking lot at the Drakes Beach would be restored to a wetland, and two ponds would be constructed within Home Ranch to provide California red-legged frog aquatic breeding habitat. Actions at Drakes Beach and Home Ranch extend beyond the original study area analyzed in 2015. The joint SEA/SIS has been developed to meet FHWA’s obligations as the lead agency under NEPA and Marin County’s obligations as the lead agency under CEQA.
Sir Francis Drake Boulevard Rehabilitation (Highway 101 to Ross)
The County has received funding to rehabilitate and make improvements to Sir Francis Drake Boulevard between Highway 101 and the Ross town limits. The project involves analysis of existing conditions, public outreach, identification of potential improvements, and selection of a preferred alternative followed by finalized design and then construction. Visit the project web page for more information and to sign up for project notifications.
Mar East Slide Repair Project
The Mar East Slide Repair Project consists of constructing a 50 linear foot retaining wall on Mar East Street in Tiburon where a slide has reduced the structural integrity of the roadway. Work will include a concrete retaining wall with tieback anchors, pavement grinding, asphalt paving, clearing and grubbing, and related incidental work. Construction will take place in the daytime hours with traffic control.
Letter to Residents in worksite vicinity
Map of traffic control
If you have additional questions, please email the Mar East Repair Project Manager, Philip Buckley, Senior Civil Engineer for DPW.