Overview

What We Are Doing

The I-15 CMCP will identify potential improvements to enhance the way people travel throughout San Diego County utilizing the I-15 Corridor. I-15 is a major north–south route in San Diego County, serving cities and communities such as San Diego, Kearny Mesa, Mira Mesa, Rancho Peñasquitos, Poway, and Escondido and providing connections to Riverside County. Projects will prioritize safety, access to opportunities, and reduction of vehicle miles traveled (VMT) through improved access and function of multimodal transportation modes such as walking, biking, and transit. 

Why This Matters 

The I-15 Corridor is a critical part of the county’s transportation network. Every day, thousands of residents, businesses, commuters, and visitors depend on this vital route to access homes, jobs, schools, and entertainment. With increasing traffic and evolving transportation needs, it’s essential that we plan ahead to ensure the corridor continues to serve everyone effectively. The CMCP will be a long-term strategy designed to address challenges by identifying solutions to ease congestion, improve safety, and expand travel options for all users—whether people drive, take the bus or train, bike, or walk. It also considers economic growth, environmental sustainability, and access to opportunities, ensuring that transportation improvements benefit all communities, protect natural resources, and create a more accessible and resilient future for all San Diego County residents. It also will serve as a blueprint for future investments and will help position projects for funding through state, regional, and federal programs.

Your Voice Matters!

Community engagement is a key part of the planning process to ensure that local needs and perspectives guide decision-making.

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Map 

Map showing I-15 Corridor within San Diego County including North, Middle, and South Segments
 

Timeline

Project Timeline

live
live

Research Existing Conditions

Winter 2026 - Fall 2026

planned
planned

Develop and Evaluate Draft Transportation Solutions

Fall 2026 - Spring 2027

planned
planned

Develop Draft CMCP

Summer 2027 - Fall 2027

planned
planned

Finalize Transportation Solutions and CMCP

Winter 2028 - Summer 2028

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