State Route 203 Pavement Project
Project Information
Caltrans proposes to preserve pavement, stabilize shoulders, restore drainage facilities, and update other highway features on State Route 203, from the Madera County line to U.S. 395 in Mammoth Lakes. This project will upgrade curb ramps along SR 203 through the town of Mammoth Lakes to comply with Americans with Disabilities Act (ADA) standards. It will also modify lane striping, markings, signage and create a striped bicycle lane on the eastbound side of the highway.
Project Maps
Click map for larger image.
Environmental Document
The Draft Environmental Document for the State Route 203 Pavement Project is now available for public review. The public comment period is open until Thursday, February 19, 2026. To submit an official public comment:
- Call us at (760) 872-0601
- Write us at ATTN: Rebeka Riesen, Caltrans Environmental Scientist, 500 S. Main Street, Bishop, CA 93514
- Email rebeka.riesen@dot.ca.gov
If you have any questions, please contact us at D9Publicinfo@dot.ca.gov.
Draft Environmental Document
Project Cost:
The estimated cost of the project is $28,184,000.
SHOPP funds are expected to cover some or all of the cost of the project.
Project Schedule*
- Project Start in Planning Stage: 6/20/2023
- Circulation of Draft Environmental Document: 1/19/2026
- Approval of Final Environmental Document: 3/15/2026
- Design & Right of Way Phase Start: 4/20/2026
- Ready to List Date: 5/1/2029
- Advertise Date: 9/5/2029
- Award Date: 10/03/2029
- Anticipated Start of Construction: 11/30/2030
- Anticipated Completion of Construction: 11/30/2031
*Schedule is subject to change.
Construction PIO Contact
Michael Lingberg
Public Information Officer
Construction
Caltrans District 9
(760) 920-0280
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.
Interested in bidding on this project?
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Information on upcoming projects can also be found at Contractor's Corner.