State Route 88 Roadway Improvements

Project Description

The California Department of Transportation (Caltrans) proposes to make roadway improvements along State Route 88 between post mile 5.5 and post mile 14.3 in Amador County. The work would include cold-planing the asphalt pavement and overlaying the road surface from post mile 5.5 to post mile 14.3; digging out spot locations to repair localized failures; adding shoulder backing; removing and replacing roadway signage; replacing culverts and end treatments; replacing down drains; and upgrading existing metal beam guardrails to the Midwest Guardrail System within the project area.


Project Map


Project Benefits


The purpose of the project is to preserve and extend the service life of the existing pavement and improve its ride quality; prevent potential flooding or undermining of the roadway; and bring existing metal beam guardrails to current safety standards.


The project is needed to address the rapid and costly deterioration of the roadway surface and culverts, as well as correct the non-standard guardrails within the project area.

Funding Source

This project is programmed in the 2020 State Highway Operations and Protection Program (SHOPP) under 201.121 for construction in the 2023/2024 fiscal year.


Project Cost/Programmed

Programed Project Cost Capital $ Support $
Project Approval & Environmental Document $0 $980,000
Plans, Specifications, & Estimates $0 $1,708,000
Right of Way $252,000 $104,000
Construction $11,516,000 $1,674,000


Projected Cost as of (October 6, 2023) Planned $ Expended $
Project Approval & Environmental Document $980,000 $804,000
Plans, Specifications, & Estimates $1,708,000 $450,000
Right of Way Support $356,000 $37,000
Construction Support $13,190,000 $0


Current Schedule

Process Date
Project Study Report (M010) Summer 2018
Project Approval & Environmental Document (M200) Spring 2022
Right of Way Certification (M410) Spring 2024
Ready to List (M460) Summer 2024
Approved Construction Contract (M500) Winter 2024
Project Completion (M600) Winter 2025


Project Status

This project is in Plans, Specifications, & Estimates (PS&E) phase and expected to begin construction in Winter of 2024.


Project Contact

Caltrans District 10 - Public Information Office
Phone: (209) 948-7977



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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.