State Route 140 Slope Repair at post mile 32.2 in Mariposa County

Project Description

Caltrans will repair the failed slope under and around an 84-inch reinforced concrete pipe culvert outlet apron at post mile 32.2 on eastbound State Route 140 in Mariposa County. The repair method will involve backfilling the eroded slope, using rock slope protection with rocks of adequate size at a 39-degree slope. Rocks would be imported from either the Ferguson Rockslide project or commercial materials, whichever is most feasible, and stored within the state’s right-of-way.

Project Map

Project Benefits


The purpose of this project is to prevent further erosion of the slope and protect the highway and associated culvert.


The need for this project is to restore the integrity of the reinforced concrete pipe culvert, which removes water and runoff, and to prevent further erosion at the outlet apron and wing wall.


Estimated Funding Breakdown

Local Not Applicable
State State Highway Operation and Protection Program (SHOPP)
Federal Yes
Construction Cost $2,800,000

Current Schedule

 Process Date
Project Approval & Environmental Document (M200) 1/2021
Ready to List (M460) 9/2021
Approved Construction Contract (M500) 12/2021
Project Completion (M600) 7/2022


Project Contact

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



Final Supplemental Initial Study Mitigated Negative Declaration -  January 2021 (PDF) 931 KB


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.