Highway 26/49 Intersection Control Improvement Project

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Project Facts


The California Department of Transportation (Caltrans) proposes to improve the safety of the intersection on State Route 26 and State Route 49 in Calaveras County in the census-designated town of Mokelumne Hill. A collision report from the California Highway Patrol and a traffic investigation conducted by Caltrans District 10 Traffic Safety Branch identified a pattern of broadside collisions at this intersection. The project proposes to build a roundabout.


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Project Benefits


The purpose of this project is to improve intersection control to reduce the number and severity of broadside collisions at the intersection of State Route 26 and State Route 49.


A pattern of broadside collisions has been identified at the intersection of State Route 26 and State Route 49, which are caused by motorists failing to yield.



For more information on the safety of Roundabout, please visit the links below.

Insurance Institute for Highway Safety
Overview of Roundabouts

Federal Highway Administration

U.S. Department of Transportation Federal Highway Administration
Roundabouts: An Information Guide

Roundabout Demonstration


Funding Source

2020 State Highway Operation and Protection Program (SHOPP) - Pavement Anchor Project (Collision Severity Reduction).


Project Cost/Programmed

 Programed Project Cost Capital $ Support $
Project Approval & Environmental Document $0 $1,610,000
Plans, Specifications, & Estimates $0 $1,759,000
Right of Way $12,516,000 $668,000
Construction $7,055,000 $1,602,000


Projected Cost as of (June 26, 2023) Planned $ Expended $
Project Approval & Environmental Document $1,610,000 $1,366,000
Plans, Specifications, & Estimates $1,759,000 $310,000
Right of Way Support $668,000 $56,000
Construction Support $1,602,000 $0


Current Schedule

 Process Date
Project Study Report (M010) Summer 2020
Project Approval & Environmental Document (M200) Summer 2022
Right of Way Certification (M410) Spring 2024
Ready to List (M460) Spring 2024
Approved Construction Contract (M500) Fall 2024
Project Completion (M600) Spring 2026


Project Status

Project is in Plans, Specifications and Estimate (PS&E).


Project Contact

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



Accessibility Assistance: Caltrans makes every attempt to ensure our documents are accessible. Due to variances between assistive technologies, there may be portions of this document which are not accessible. Where documents cannot be made accessible, we are committed to providing alternative access to the content. Should you need additional assistance, please contact us at (916) 654-2852 or visit https://dot.ca.gov/request-ada-compliant-documents.

Initial Study with Negative Declaration – FINAL – August 2022 (PDF 2.4MB)


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.