The Hillcrest Road Widening and West Side Bridges projects will enhance traffic flow on Yerba Buena Island and connectivity from Treasure Island to the San Francisco-Oakland Bay Bridge, with Geocon proudly contributing to the concurrent progress of both projects.
Located on Yerba Buena Island, these vital developments will improve pedestrian and bike access while linking key transportation routes, including the recently completed Southgate Road Interchange on which Geocon also worked, providing greater regional access to Treasure Island and the San Francisco-Oakland Bay Bridge West Span Skyway.
Geocon conducted site investigations and identified lead as the primary contaminant of concern in near-surface soil. We are currently overseeing the safe removal of lead-impacted soil, including the use of X-ray fluorescence (XRF) devices for field screening during excavation, air monitoring during excavation, and real-time remote dust monitoring data alerts during soil disturbances. Geocon also performed hazardous materials surveys of the old bridges and retaining wall structures.
When completed, a wider Hillcrest Road and the new West Side Bridges will create safer and more-efficient transportation routes, with improved access for vehicles, pedestrians, and cyclists. By enhancing this key corridor, we are ensuring reliable and accessible roadways that support the growth and mobility of Yerba Buena Island and Treasure Island.