Big Creek to Carmel Drainage Restoration

Project Description

The California Department of Transportation (Caltrans) proposes to rehabilitate six existing drainage systems at five locations on State Route 1 in Monterey County between post mile 27.76 near Big Creek to post mile 70.87 within the City of Carmel-by-the-Sea. Existing drainage systems at the proposed locations have exceeded their design life and have deteriorated or failed. The project work includes replacing or rehabilitating existing culverts and replacing or upgrading end treatments and headwalls as needed. For the proposed project, Caltrans is the lead agency under both the California Environmental Quality Act (known as CEQA) and the National Environmental Policy Act (known as NEPA). Caltrans has determined that the project qualifies for a Categorical Exclusion under NEPA and will complete that documentation before project approval.

Project Vicinity Map 

Project Benefits


The purpose of this project is to rehabilitate existing drainage systems in Monterey County that have exceeded their design life and have deteriorated or failed to maintain operations and reduce maintenance on State Route 1.


The Drainage Systems Reports that were developed by the Culvert Inspection Program identified existing culverts that need to be repaired or replaced due to issues such as deterioration, corrosion, damage, shape loss, or joint separation. If the culverts are allowed to continue to deteriorate, then undermining of the roadway will occur, and the highway will be compromised.

Estimated Funding Breakdown

Funding Source Funding Amount
State 100 Percent
Construction Cost $1,250,000


California Transportation Commission, California Department of Fish and Wildlife, Central Coast Regional Water Quality Control Board, U.S. Army Corps of Engineers, U.S. Fish and Wildlife Service, National Marine Fisheries Service, Monterey County, California Coastal Commission.


Proposed Project Schedule

Process Date
Final environmental document to be completed February 2024
Right-of-way acquisition to be completed October 2024
Design to be completed May 2025
Advertise July 2025
Construction to begin August 2026
Construction to be completed May 2028


Project Contact

Aaron Wolfram, Project Manager
Phone: (805) 858-8451

Dianna Beck, Senior Environmental Planner
Phone: (805) 459-9406

Public Information Office, Caltrans District 5
Phone: (805) 549-3138



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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.