SR37 Corridor Projects

SR37 Main Home Page Banner 


Link to Clickable Map Below

Clickable Map of Route 37


SR 37 is an important regional connection linking the north, east and west SF Bay Region following along the northern shore of San Pablo Bay.  This 21-mile long roadway from US 101 to I-80 connects job markets and housing within Marin, Sonoma, Napa and Solano counties.

SR37 Project Home Page Map Overview

  • Segment A:   US 101 (Novato) in Marin County to SR 121 (Sears Point) in Sonoma County:  4-Lane Expressway
  • Click here for virtual tour of Segment A
  • Segment B:    SR 121 (Sears Point) in Sonoma County to Mare Island (Vallejo) in Solano County: 2-Lane Highway
  • Segment C:    Mare Island (Vallejo) to I-80 Interchange in Solano County: 4-Lane Freeway


                     Current Projects 

                                                                Caltrans Repaves Section of State Route 37 in Sonoma County