Phase 2 Construction Underway

The Island Ponds are near Milpitas

Alviso: Machines and crews are hard at work tearing down levees and clearing vegetation on Island Pond A19 so Bay tides can enter and speed salt marsh growth there and at nearby Pond A20. We first opened the Island Ponds to Bay tides in 2006 and that work has enticed endangered salt marsh harvest mice and Ridgway's rails to the most vegetated of the islands, Pond A21. Find out more in Dave Halsing's December 2nd blog.

Ravenswood: Construction crews are installing huge pipes to create water control structures and shoring up levees, helping to prepare the way for duck and shorebird ponds. Partnering non-profit Save The Bay is scattering seed and planting vegetation on our new habitat slopes - read about it here. The completed 294-acre project will feature not only the bird ponds but also new trails, a viewing platform, new tidal marsh along the Bay, nesting islands and habitat slopes for wildlife.

Workers lay pipe at RavenswoodWorkers lay pipe at Ravenswood.

Seed collector at work. Credit: Save The Bay
Seed collector at work. Credit: Save The Bay

More information on current work:

Ravenswood Ponds Construction

New Trail & Wildlife Habitat


The Don Edwards San Francisco Bay National Wildlife Refuge in July 2018 launched levee maintenance and habitat enhancement at the Refuge’s Ravenswood Ponds, on lands directly south of the City of Menlo Park’s Bedwell Bayfront Park. To shore up and repair pond levees, trucks imported large quantities of soil. Soil imports continued in 2020 to prepare for construction of a new public trail and slopes for wildlife, part of the South Bay Salt Pond Restoration Project’s Phase 2 projects. Trucks need to drive through the Park entrance and alongside part of a San Francisco Bay Trail/Park perimeter trail that loops around the edge of the Park to reach Refuge lands. They need to use the Park’s front parking area. To protect public safety, the impacted Park areas and trail segments are closed when trucks are present. A flagger, barriers or fences block access to those areas. When work is occurring, affected trail segments are generally open for public use on weekends, and on weekdays after 5 p.m. When work is not occurring, trails are open.

Please follow all trail closure signage and fencing. The closures are for your safety while heavy trucks are operating.

Project Benefits

  • 294 acres of new tidal marsh
  • 37 acres of ponds improved for ducks and shorebirds
  • A new trail and viewing platform between Bayfront Expressway and the southern edge of Bedwell Bayfront Park
  • Improved All-American Canal levee to protect the pond bordering the Facebook campus

Further information about this project is available below.

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Main contact:
Matt Brown
Refuge Manager
[email protected]
510-792-0222, Extension 125

Truck-related matters:
Bryan Evans
Operations Manager, Pacific States Environmental Contractors, Inc.
[email protected]

Status: Location: Schedule:
Active Ravenswood Start in 2018, Finish in 2021

MAP: Bedwell Bayfront Park/Baytrail segment impacted 


News & Updates 

Note: This information based on construction activity is current as of April 2, 2020. As new information becomes available, we will provide additional updates.

Workers have completed a parallel track for trucks that has removed truck traffic from most parts of the San Francisco Bay Trail in the City of Menlo Park's Bedwell Bayfront Park.

Soil hauling began in July 2018 to shore up shorebird pond levees. In Fall 2018, trucks began bringing in soil for South Bay Salt Pond Restoration Project Phase 2 projects, including a new slope to help wildlife escape high tides, and a new public trail. That work continues in 2020.

Construction lasts roughly May through October (until the rains begin).

Specific continuing construction impacts to the Park include:

  • Park Entrance: Trucks travel through the Park entrance. However, the entrance remains open to public vehicles through the construction activities. The pedestrian/bicycle trail entrance has been shifted to the south. Work areas will be separated from public users by fences, signs and/or barriers, and flaggers are present near the park entrance when trucks are active.

  • Parking: The Park’s front parking area is closed off, but other Park parking will continue to be available further up Marsh Road.

  • Trails: Aside from the 1/4-mile San Francisco Bay Trail segment along the Park's southwest corner, the rest of the Park's extensive trail network will not be impacted. Trails sections impacted by trucks will be open for use after 5 p.m. and on weekends and holidays.

  • Truck traffic: There is increased truck traffic exiting Highway 1 at Marsh Road, and at the vehicle entrance/exit area of Bedwell Bayfront Park.

What to Expect During Construction

The Refuge and the Restoration Project are working to minimize traffic and trail access impacts. We appreciate your understanding and cooperation as we prepare for habitat and trail construction.

When do trucks operate?
Work is limited to Monday through Friday during the day. No weekend work is allowed. Trails will be open during the work hours when trucks are not present.

How long will the overall project last?
From 2018 to 2021. Construction of the restoration project elements within the ponds continues through 2020, and is expected to continue into 2021.  

Traffic Impacts: What are expected traffic impacts?
Trucks exit Highway 101 directly along Marsh Road. There is increased traffic at the vehicle entrance/exit area of Bedwell Bayfront Park when trucks are present. 

Park Impacts: Which roads, parking areas, trails and trail access points may be impacted?
Trucks exit Highway 101 at Marsh Road and use Marsh Road to enter Bedwell Bayfront Park. They then drive along the area now devoted to the Park’s front parking area, and turn right onto a new dirt roadway parallel on the outside of the Bay Trail/Park perimeter trail, traversing along the west side of the Park to Refuge lands. In order to protect pedestrians and bicyclists, a new pedestrian/bicycle entrance, to the south of the existing entrance, was established [indicated in blue on the map]. The park access trail closest to Marsh Road is closed to pedestrians and cyclists, as is the Marsh Road crossing area.

Updated maps will be provided showing the current portions of trails that are closed or impacted by construction. The primary work season is expected to extend from May to October. 

Will there be signs and people on hand to help?
The soil hauling company Pacific States has certified traffic controllers who are on site with flags when trucks are active. Flaggers are stationed at the pedestrian crossing area at the entrance to the park (as indicated on the map). Signs indicating trail closures are located at the entrance to the park and at intersections of the Bay Trail/Park perimeter trail and park trails.  

How can members of the public access the City’s free compost pile at the entrance to Bedwell Bayfront Park?
Trucks may hinder the public’s ability to drive up and collect compost from the pile during weekday work hours. The compost pile would always be available on weekends and during the week before 8 AM and after 5 PM. 

Background & History


The levee maintenance and habitat enhancement work provides a variety of environmental and community benefits including:

  • Enhanced and restored habitat for endangered and native wildlife 
  • New recreational trail and viewing area

Initial Construction Work

Work in spring 2018 was levee maintenance focused on shoring up levees. The mission of Don Edwards San Francisco Bay National Wildlife Refuge is to manage its acreage to conserve fish, wildlife, and plants. The Refuge contains many levees that are battered by winds and tides. The Refuge keeps these levees in good condition by adding new soil, so they can continue to protect the integrity of the ponds that are important foraging and breeding habitat for many waterbirds.

South Bay Salt Pond Restoration Project Phase 2 Ravenswood Construction

Work began in fall 2018 and continues on South Bay Salt Pond Restoration Project’s Phase 2 plans for Ravenswood.

Preferred Alternative Ravenswood
Figure 6.4: Preferred Alternative for Ravenswood

What the Phase 2 construction at Ravenswood will accomplish:


Create 294 acres of tidal marsh south of Bedwell Bayfront Park. The new habitat will feature 8 acres of new upland areas along the Park and the All-American Canal levee so wildlife can escape storms, high tides and sea level rise. The work at Pond R4 will be accomplished by breaching the levee between the pond and San Francisco Bay to let in Bay tides. Work includes improving the All-American Canal levee to protect 270 acres to the west, Pond R3. This pond borders the north and east sides of the Facebook campus. It will be kept as dry salt flat for threatened western snowy plovers to nest.


Transform 37 acres of ponds between the Bayfront Expressway and Bedwell Bayfront Park into shallow water habitat for ducks and shorebirds.


A new trail will run from the Bay Trail on Bayfront Expressway south of Chilco Street through ponds to reconnect with the Bay Trail at the southern edge of Bedwell Bayfront Park, creating a loop around Ponds R5/S5. A new viewing platform midway along the trail will offer views of three different types of bird habitat, the duck ponds, newly developing wetlands and dry nesting habitat for the threatened western snowy plover.

Alviso Levee Maintenance: Trail Blockages

UPDATED TRAIL CLOSURE ALERT: The Alviso Slough Trail, usually a loop, will temporarily become two dead-end trails when trucks bring in fill. The trail is accessed from Alviso Marina County Park and the Refuge's Environmental Education Center. Partial trail closures continue as workers bring in fill and aggregate to shore up levees to ensure the longevity of trails and pond habitat. The partial closures occur on weekdays between 7 a.m. and 5 p.m. through June 11, 2021. Trucks will enter through the Alviso Marina County Park entrance and will travel along ponds A12, A13 and A15.

For more information, contact Refuge Manager Matt Brown at @[email protected] or (510) 453-6695.

Alviso trail closure

Eden Landing Planning

Eden Landing Phase 2 Final Environmental Impact Report 

The final document, released April 5, 2019, describes the preferred plan for tidal marsh restoration, wildlife habitat improvements, new trails and flood protection on 2,270 acres of ponds near Union City. It analyzes environmental impacts of alternative plans for the area covering about half of the California Department of Fish and Wildlife’s Eden Landing Ecological Reserve. This final report also includes responses to public and stakeholder comments received on the Spring 2018 draft report.

Download the Final Document

Download the Draft Document

Information on the alternatives:

  • June 30 Eden Landing Scoping Meeting Presentation [PDF]
  • Eden Landing Phase 2 Alternatives - [PPT]

See below under Other Phase 2 Documents for the Notice of Preparation and other Eden Landing-related documents released to date.

Alviso/Ravenswood Planning

The final environmental analysis document details Phase 2 plans for 2,400 acres of ponds in the Alviso area near San Jose and Mountain View, and the Ravenswood area near East Palo Alto/Menlo Park.

  • To Download: You can download all or part of the final Environmental Impact Statement/Report here.

To View a Hard Copy of the Final Alviso/Ravenswood EIS/R:

  • San Francisco Bay National Wildlife Refuge Complex Headquarters, 1 Marshlands Road, Fremont, CA 94555,
    510-792-0222 [map]
  • State Coastal Conservancy 1330 Broadway, 13th Floor, Oakland, CA 94612, 510-286-1015 [map]
  • US Army Corps San Francisco District, 1455 Market Street, San Francisco, CA 94103, 415-503-6804, [map]
  • Santa Clara Valley Water District administration building, 5750 Almaden Expressway, San Jose, CA 95118,

Other Phase 2 Documents

These handouts summarize key actions under consideration:

These handouts summarize key actions under consideration:

  • Handout - Eden Landing (PDF)
  • Handout - Alviso (PDF)
  • Handout - Ravenswood (PDF)

You can give us your thoughts and ideas through our comment form.