State Route 37 follows 21 miles along the northern shore of San Pablo Bay linking US 101 in Novato, Marin County with Interstate 80 (I‐80) in Vallejo, Solano County. It serves as a vital connection between Marin , Sonoma , Solano and Contra Costa and the Central Valley. It is the northernmost non‐mountainous east‐west link between US 101 and I‐5 (via I‐80 and I‐505) in the State.
Planning a More Resilient Highway 37 for All
Think about Highway 37 as more than just a commute! The future of this corridor demands finding solutions to chronic traffic congestion and periodic flooding. But it will also require balancing transportation needs with protecting and enhancing sensitive marshland habitats. Planning a long-term solution presents an opportunity to provide bicycle, pedestrian, transit, and carpool options for all travelers. For more information, visit the Resilient 37 page.
Growing housing demand in the North Bay counties has produced a housing market that a high percentage of household cannot afford. Consequently, many have to live far away from their jobs. This jobs/housing imbalance is one cause of congestion Bay Area wide, and specifically for SR 37. Average Annual Daily Trips are projected to increase from 45,000 in 2013 to 58,000 by 2040.
Sea Level Rise
SR 37 is protected by a complex system of interconnected levee which makes the corridor vulnerable to Sea Level Rise inundation and flooding now and in future.
SR 37 MOU Partnership
In December 1, 2015, the Congestion Management Agencies (CMA) of Marin, Napa, Solano and Sonoma Counties agreed to form a partnership through a Memorandum of Understanding (MOU) to develop an expedited funding, financing and project implementation strategy for the reconstruction of SR 37 to withstand rising seas and storm surges while improving mobility and safety along the route.
- August 22, 2021: Eastbound State Route 37 Additional Three Nights of Work
Between Walnut Avenue in Vallejo & State Route 121 Overnight Full Highway Closures
|Public Private Partnerships||SBX||US-36||Presidio||I-4||S. Norfolk||G. Bush|
|Project Size||$635 million||$497 million||$1.1 billion||$2.9 billion||$142 million||$1.2 billion|
|Project Delivery Performance||12 year delay||On-time||On-time||Under construction||9 months after planned||On-time|
|Toll Rate Setting Control||Private sector sets toll up to 18.5% cap on equity return||Private sector sets dynamic toll to achieve specified service requirement||No tolls||Public sector sets dynamic toll to achieve specific service level||Private sector set toll rates with no defined limit||Public sector|
|Revenue Control||Shared with public sector beyond a defined limit||Shared with public sector beyond a defined limit||Not applicable||Public sector||Private sector||Public sector|
|Established Traffic History||No|
|Competitive Procurement Process||Partial (RFQ only)||Yes||Yes||Yes||No||No|
|Environmental Approval Process Responsibility||Private sector, initiated post award||Public sector, substantially completed prior to procurement||Public sector||Public sector||Private sector||Public sector|