Interstate 15 Corridor
Inter-Regional Partnership Overview

"It's bumper to bumper on southbound Interstate 15 from Escondido through Mira Mesa..."

The above traffic report has become routine in the San Diego area, as from southwestern Riverside County to central San Diego, this major freeway artery is routinely paralyzed with traffic congestion. This is due to I-15 commuters making increasingly longer drives between their homes and places of work.

Traffic congestion on I-15 is only a symptom of a larger condition: the flight of thousands of families from the San Diego region to southwestern Riverside County. These families are in search of more affordable, suburban, single family homes. The result is an increasing dislocation of jobs and housing in both counties.

To address both the causes and impacts of this growing jobs/housing imbalance, the San Diego Association of Governments (SANDAG) and Western Riverside Council of Governments (WRCOG) joined forces with the Southern California Association of Governments (SCAG), California Department of Transportation (Caltrans) and others to form the I-15 Interregional Partnership (IRP). Funded, in part, by a grant from the California Department of Housing and Community Development, the IRP conducted research and created strategies to reduce both the demand for and impacts of interregional commuting along the I-15 corridor.

Existing Conditions: Jobs/Housing Balance Problem
Commuting from southwestern Riverside County to the San Diego region has increased over the past decade. For many this commute can average more than two hours per day. To find out more about the reasons for this commute and its characteristics, click here.

Solutions/Strategies
The I-15 IRP created an IRP Technical Working Group to devise various strategies to address the jobs/housing imbalance in the region. This group coordinated with the IRP Policy Committee, several local agencies, and other stakeholder groups. To learn more about the strategies developed by the IRP, click here.

GIS
Geographic Information System (GIS) analysis was used by the I-15 IRP to better define the IRP regional commuting patterns. For more information on this IRP's use of GIS, click here.

Final Reports
The I-15 IRP produced several reports and work products, documenting the existing jobs/housing imbalance and proposed strategies to remedy it. For those reports, click here.

IRP Website
For additional information about the I-15 IRP, including all reports, meeting information and members, please visit the I-15 IRP website.

Maps

	Interactive Maps (Each map service opens in a new window)
	IRP Base Map	This service serves as a base map for the two county Interstate 15 Inter-Regional Partnership which includes Riverside and San Diego counties.