US 101 Santa Maria to San Luis Obispo Multimodal Corridor Plan


This effort will develop a comprehensive multimodal corridor plan and concept of operations addressing regional and interregional safety, congestion, accessibility, goods movement, economic development, land use efficiency, public health, air quality, and greenhouse gas emissions for US 101 from State Route (SR) 135 in Santa Maria to SR 58 near Santa Margarita, an overall corridor of about 37 miles. The final product will be developed in collaboration with local agency partners and stakeholders. The plan will provide a range of proposed concepts, evaluate and prioritize improvements within the study limits, and set a solid framework for implementing short- and long-term capital improvements supporting the Road Repair and Accountability Act of 2017 (SB 1) goals and priorities.

What is a Comprehensive Multimodal Corridor Plan?

The 101 MCP will be based on the California Transportation Commission’s 2018 Comprehensive Multimodal Corridor Plan Guidelines. This guidance emphasizes a holistic planning approach that strives to achieve a balanced transportation system. In following with the Guidelines, the 101 MCP will align with the following priorities:

  • Include local, regional and state agencies in the corridor planning process

  • Balance infrastructure, livability, economic and sustainability

  • Provide multimodal, multidisciplinary corridor-based planning


Corridor Planning Partners


Caltrans began reaching out to our partners in late 2019 to initiate the developing of the plan. We will continue our collaboration as the plan develops, as well as add other partners if needed. We are working in partnership with the following entities:

  • San Luis Obispo Council of Governments

  • County of San Luis Obispo

  • San Luis Obispo Regional Transportation Authority

  • City of Arroyo Grande

  • City of Grover Beach

  • City of Pismo Beach

  • City of San Luis Obispo

  • Santa Barbara County Association of Governments

  • County of Santa Barbara

  • City of Santa Maria


Get Involved

Caltrans is currently developing the engagement strategy for the 101 MCP. We will update this page with additional content and opportunities to provide input as the plan develops. Please bookmark this page and stay tuned for future announcements and updates.

For more information contact:
Kelly McClendon, D5 Planning