State Route 37 Flood Reduction Project Fact Sheet From US 101 to Atherton Ave.

Map showing the project area for the Flood Control Project on State Route 37 in Marin County, California.

Project Description:

This project proposes to construct causeway on State Route (SR) 37 between US-101 and Atherton Avenue to address recurring flooding and projected sea level rise to year 2130.

Purpose and Need:

The purpose of this project is to address recurring flooding and future SLR impacts to the existing SR 37 in Marin County. This project would address recurring flooding and SLR to year 2130 on SR 37 from US 101 to Atherton Ave. The first construction package is replacement of Novato Creek bridge.

Project status and schedule:

Begin Environmental Studies  - Summer 2021 (Actual)

Scoping meeting - November 17, 2021 (Actual)

Second Scoping meeting- December 14, 2022 (Actual)

Circulate Draft Environmental Document - August 25, 2023 (Actual)

Complete Environmental Phase – January 31, 2024 (Actual)

Complete Design of Phase 1 – Summer 2026 (Tentative)

Begin Construction of Phase 1 – Spring 2027 (Tentative)

End Construction of Phase 1 – Fall 2029 (Tentative)