Sutter Avenue Green Street Project


Project Overview

Sutter Avenue is a 0.5-mile-long residential road located in the southwestern portion of the City of San Pablo. Historically, Sutter Avenue has been a high-flood risk area in San Pablo, as a result of a lack of stormwater infrastructure and San Pablo’s flat topography in this area of the city. Additionally, Sutter Avenue lacks pedestrian facilities and has had many resident complaints of unsafe traffic speeds.

In order to help reduce flooding in this area with limited stormwater infrastructure, the proposed green street retrofits would incorporate different types of green infrastructure including bioswales and suspended pavement systems.  The green infrastructure facilities would be designed to also help slow traffic speeds, improve pedestrian safety, and support street tree growth.

Intersection of Sutter Ave and 15th St / Intersección de la Avenida Sutter y Calle 15Bioswale sidewalk bulb-out example (Source: City of Los Altos)Schematic illustration of an installed load-bearing modular grid product (Source: Deep Root Tech)
Image 1: Sutter Avenue at 15th Street. Image 2: Bioswale sidewalk bulb-out example. (Source: City of Los Altos)Image 3: Schematic illustration of an installed load-bearing modular grid product (Source: Deep Root Technologies). The use of this image is for general information only, and is not an endorsement of this or any other proprietary product.

Key Project Elements

The Project will include the following key elements:

  • Green infrastructure facilities to capture stormwater with the goals of reducing flooding and improving stormwater quality when it flows into Wildcat Creek
  • Wider sidewalks at intersections (“bulb-outs”) to improve pedestrian safety and incorporate bioswales
  • Mid-block curves in the road (“chicanes”) to slow traffic speeds and incorporate bioswales
  • New striping, pavement markings and ADA curb ramps
  • Potential use of suspended pavement systems to improve street tree growth and capture stormwater

Project Schedule

  • Design and Permitting: Spring 2022 - Spring 2023
    • Public Meeting 1: Thursday, April 21, 2022 at 6:00PM on Zoom
    • Public Meeting 2: Saturday, August 13, 2022 from 10:00AM to 2:00PM at Sutter Avenue and 16th Street
  • Construction (estimated): Summer - Fall 2023

Project Team

  • Project Manager: Matt Brown, Senior Engineer, City of San Pablo
  • Project Design Team: Geosyntec Consultants (with Wood Rogers, Alta Design and The Watershed Project as subconsultants)
  • Project Construction Manager: To be determined
  • Project Construction Contractors: To be determined

Project Contact

If you have any questions regarding the project, please contact Matt Brown at (510) 215-3061 or by email.

Project Funding

The total estimated cost of this project is ~$3.5 million.

The Project has been made possible by the following funding sources:

  • City funds: $300,000Grant Logo for Proposition 1
  • State Water Resources Control Board (SWRCB)
    • Proposition 1 Storm Water Grant Program (SWGP): $1,560,000
    • SWRCB’s mission is to preserve, enhance, and restore the quality of California’s water resources and drinking water for the protection of the environment, public health, and all beneficial uses, and to ensure proper water resource allocation and efficient use, for the benefit of present and future generations.

For more information, visit

  • California Natural Resources Agency (CNRA)California Natural Resources Agency Logo
    • Proposition 68 Urban Flood Protection Grant: $1,760,000
    • CNRA’s mission is to restore, protect and manage the state’s natural, historical and cultural resources for current and future generations using creative approaches and solutions based on science, collaboration and respect for all the communities and interests involved.

For more information, visit for the Environmental Protection Agency

  • US Environmental Protection Agency (US EPA)
    • San Francisco Bay Water Quality Improvement Fund: $50,000
    • The mission of the US EPA is to protect human health and the environment.

For more information, visit