State Route 4 Corridor Vision Study

The Contra Costa Transportation Authority (CCTA) is developing the State Route 4 (SR-4) Corridor Vision Study in order to develop a long-term, comprehensive transportation plan for SR-4 that addresses congestion, safety, and other mobility concerns in Contra Costa County. SR-4 is the primary east-west highway in the northern portion of Contra Costa County, beginning in Hercules in the west and continuing into San Joaquin County in the east. This work is being done in partnership with the California Department of Transportation (Caltrans).

With this new vision established, CCTA will be able to make forward-thinking investments along SR-4 and the surrounding local roads, railways, waterways, transit systems, and bike and pedestrian connections.

SR-4 Corridor Map

SR-4 Corridor Vision Study Goals

Green triangle with exclamation mark inside a green circle.
Enhance overall safety
Icon with a pedestrian, a cyclist, and a car symbolizing transportation accessibility.
Improve multimodal travel
Green upward arrow and bar chart with a dollar sign inside a green circle.
Increase economic vitality
Green icon with two human figures and an equal sign between them.
Improve social equity
A green house icon alongside a tree within a circular green border.
Support efficient land uses
Green gear icon surrounded by two green arrows on a white circular background.
Leverage technology to improve corridor efficiency
Icon depicting a green tree with two human figures raising their hands, and a path on the left, enclosed in a green circle.
Improve air quality, health, and sustainability

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Milestones

The State Route 4 Corridor Vision Project has seven major phases of work, several of which overlap. The "Public and stakeholder outreach" phase lasts from November 2022 to December 2023. The "Inventory existing plans & projects" phase lasts from November 2022 to Mat 2023. The "Analyze existing projects" phase lasts from February 2023 to June 2023. The "Assess the existing corridor performance" phase lasts from June 2023 to July 2023. The "Screen and prioritize recommended improvement projects" phase lasts from June 2023 to September 2023. The "Prepare the SR 4 Corridor Vision document" phase lasts from August 2023 to December 2023.

What is a Comprehensive Multimodal Corridor Plan (CMCP)?

This study is a crucial step in CCTA’s efforts to fund transportation infrastructure investments by meeting Senate Bill (SB) 1 Congested Corridor Program requirements for a Comprehensive Multimodal Corridor Plan (CMCP). A CMCP is developed with state, regional, and local partners and is consistent with the Regional Transportation Plan.

A CMCP aims to:

  • Provide holistic guidance for transportation investments.
  • Reduce congestion in highly traveled corridors.
  • Provide more transportation choices for residents, commuters, and visitors while balancing the character of the local community.
  • Create opportunities for neighborhood enhancement projects.
Fact Sheet / One-pager

For more info about this study, contact:

John Hoang – Director, Planning
Contra Costa Transportation Authority
925.256.4729
jhoang@ccta.net