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    Sunrise over Vallejo and Mt. Diablo as viewed from Cullinan Ranch
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    American Avocets feed in shallow tidal waters
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    Recently restored tidal marsh in the San Francisco Bay
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    Sandpipers take flight in a tidal lagoon
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    A quiet slough in the Napa Sonoma Marsh
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    Tidal marsh transitions to open water in the San Pablo Bay NWR



8/4/14 - Geofoam is being utilized underneath the slopes of the embankment to prevent future settlement of the roadway...

7/28/14 - The contractor has mobilized on site and will begin stripping the highway embankment of existing vegetation and cleaning the ditch at the toe...

Traffic Alerts

A planned shoulder closure on Westbound 37...

Nightime stoppage of traffic will be required for placement of K-rail...



The Cullinan Ranch Restoration Project will restore over 1500 acres of tidal wetlands in the San Pablo Bay National Wildlife Refuge. Once complete, the site will be open to the public to explore on foot, bicycle or kayak.

After interior demolition, protecting important infrastructure, and installation of public use elements, the Project will breach aging levees along the perimeter to allow tidal flows back into the site. Over time, it will become an expansive marsh, bisected by tidal channels and filled with a multitude of birds, fish and other aquatic species. Learn more about the project here.

  • Conceptual Plan at Pond 1 Parking Lot
  • Conceptual Plan at Guadalcanal Village (note: these improvements are not part of the current restoration plan)
  • Conceptual Plan of the Cullinan Ranch Restoration