Chicago Marsh Trail Boardwalk
Improving Access to a Bayfront Wildlife Refuge
The Chicago Marsh Trail Boardwalk project restores public access between the Don Edwards San Francisco Bay Wildlife Refuge and the adjacent levee trail in San Jose, CA. As part of the South San Francisco Bay Shoreline Project, a new 400-foot boardwalk extension and ADA-compliant ramp were designed to reconnect the trail system following levee improvement work.
Our team performed a detailed topographic survey of the levee finish grades and established local control to guide accurate alignment and construction layout. Using this survey data, we designed the boardwalk’s structural framing and foundation system to perform within marshland conditions. Helical piles were used to reach competent bearing soils below soft sediment, while batter piles provided the lateral resistance needed across the elevated span. These elements ensured that the boardwalk could be constructed efficiently and reliably in challenging terrain.
ADA accessibility was central to the project, resulting in a switchback ramp and consistent walkway geometry that improve access for all visitors. Throughout construction, we provided support for layout verification, pile installation, and structural coordination. The completed boardwalk reconnects an important segment of the refuge trail network, enhances pedestrian accessibility, and improves the overall visitor experience within the Chicago Marsh area.
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