State Route 37 (SR 37) is a 21-mile corridor located along the San Pablo Bay in the San Francisco Bay Area and connects the North Bay counties of Marin, Sonoma, Napa and Solano. In 2016, the Metropolitan Transportation Commission (MTC), California Department of Transportation (Caltrans) District 4, and the four North Bay transportation authorities formed a partnership to address SR 37’s most critical issues: traffic congestion, vulnerability to flooding and sea level rise (SLR), and environmentally sensitive areas. Together, this partnership developed the SR 37 Resilient Corridor Program (Resilient SR 37) to identify corridor improvements. The first phase of Resilient SR 37 focused on the segment of the corridor between CA 121 in Sonoma to Mare Island in Vallejo (Segment B).  This project, Segment A, will continue the work between US 101 in Novato to CA 121 in Sonoma.

CE&G is working as a geotechnical subconsultant to T.Y.Lin in the development of conceptual design alternatives for the segment corridor. The team is currently preparing potential implementation plans and will propose a project delivery model for the selected alternatives. The team is cooridinating with a variety of stakeholders, including Resilient SR 37 Segment A will include MTC, Caltrans District 4 (Caltrans), Sonoma County Transportation Authority (SCTA), Transportation Authority of Marin (TAM), Marin County Department of Public Works, and the Bay Conservation and Development Commission (BCDC), with support from Solano Transportation Authority (STA) and Napa Valley Transportation Authority (NVTA).

CE&G responsibilities include researching the necessary geologic, soil and seismicity literature in order to provide base structural assumptions. The team’s conceptual designs will consist of exploring feasible roadway alignment and the implementation of three construction methodologies listed (embankment, causeway and a combination).