U.S. 101/Prado Road Interchange Project

Project Description

The City of San Luis Obispo proposes to extend Prado Road over U.S. Route 101 to connect with Dalidio Drive and rebuild the existing U.S. Route 101 northbound on- and off-ramp connections to Prado Road. The interchange is in the City of San Luis Obispo at post mile 26.8 on U.S. Route 101. The project limits extend from post mile 26.5 to post mile 27.3.

project vicinity map 

Project Benefits


The purpose of the project is to:

  • Improve overall operations of U.S. Route 101 and nearby interchanges;
  • Improve safety and mobility for bicyclists and pedestrians; and
  • Improve transit performance and enhance transit opportunities.


The need for the project involves providing better community connectivity by improving current and future operations on U.S. Route 101 and nearby interchanges, improving safety and mobility for bicyclists and pedestrians, improving transit performance, and enhancing transit opportunities.

Estimated Funding Breakdown

Funding Source Funding Amount
Local $51,300,000
State $14,200,000
Construction Cost $65,500,000


Proposed Project Schedule

Process Date
Final environmental document to be completed November 2023
Right-of-way acquisition to be completed July 2025
Design to be completed July 2025
Advertise October 2025
Construction to begin February 2026
Construction to be completed February 2029

Project Contact

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

Paul Valadao, Project Manager
Phone: (916) 764-9123
Email: paul.valadao@dot.ca.gov

Public Information Office, Caltrans District 5
Phone: (805) 549-3318
Email: info-d5@dot.ca.gov


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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.