Middle River Bridge Roadway Realignment

Project Description

This project is located west of the City of Stockton in San Joaquin County at the Middle River Bridge on State Route (SR) 4. The project proposes to realign the approach curve and widen shoulders on the east end of the Middle River Bridge; upgrade safety devices such as the metal beam guardrail to Midwest Guardrail System; relocate and install additional street lighting; and install flashing beacons. 


Project Benefits


The purpose of this project is to reduce the number and severity of collisions occurring at the east end approach to the Middle River Bridge by realigning the approach curve.


The need is to realign the existing tight approach curve with a wider curve radius to provide better decision sight distance for trucks and buses before entering the narrow bridge.


Funding Source

The project is programmed in the 2018 State Highway Operation and Protection Program (SHOPP) under the Collision Reduction Program in fiscal year 2019/20.


Project Cost/Programmed

 Programed Project Cost Capital $ Support $
Project Approval & Environmental Document $0 $1,081,000
Plans, Specifications, & Estimates $0 $1,798,000
Right of Way $2,925,000 $501,000
Construction $8,512,000 $2,006,000


Projected Cost as of (June 23, 2022) Planned $ Expended $
Project Approval & Environmental Document $1,081,000 $821,000
Plans, Specifications, & Estimates $1,798,000 $1,753,000
Right of Way $3,426,000 $2,397,000
Construction $10,518,000 $174,000


Current Schedule

 Process Date
Project Study Report (M010) Winter 2017 (Actual)
Project Approval & Environmental Document (M200) Winter 2018 (Actual)
Right of Way Certification (M410) Summer 2021 (Actual)
Ready to List (M460) Summer 2021 (Actual)
Approved Construction Contract (M500) Winter 2022 (Actual)
Project Completion (M600) Summer 2023


Project Status

Construction began in May of 2022 and expected to be completed by summer of 2023.


Project Contact

Caltrans District 10 - Public Information Office
Phone: (209) 948-7977
Email: district10publicaffairs@dot.ca.gov


Title VI Information

The California Department of Transportation (Caltrans) assures that no person shall, on the basis of race, color, or national origin, be excluded from participation in, be denied the benefits of, or be otherwise subjected to discrimination under any program or activity receiving Federal financial assistance, as required by Title VI of the Civil Rights Act of 1964, as amended, the Civil Rights Restoration Act of 1987, and Federal Executive Order 12898 (Federal Actions to Address Environmental Justice in Minority Populations and Low-Income Populations).

Caltrans will make every effort to ensure nondiscrimination in all of its programs and activities, whether they are federally funded or not, and that services and benefits are fairly distributed to all people, regardless of race, color, or national origin. In addition, Caltrans will facilitate meaningful participation in the transportation planning process in a nondiscriminatory manner.