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Comprehensive Transportation Projects

2021 Regional Transportation Improvement Program

View the Final 2021 Regional Transportation Improvement Program

SANDAG, as the Metropolitan Planning Organization and the Regional Transportation Planning Agency, is required by state and federal laws to develop and adopt a Regional Transportation Improvement Program (RTIP).

The RTIP is a multi-billion-dollar, multi-year program of proposed major transportation projects in the San Diego Region. Transportation projects funded with federal, state and TransNet, the San Diego transportation sales tax program must be included in an approved RTIP. The programming of locally funded projects may also be programmed at the discretion of the agency.

The RTIP covers five fiscal years (FY 2021 through FY 2025) and incrementally implements the SANDAG 2019 Federal Regional Transportation Plan, the long-range transportation plan for the San Diego region.

The current Regional Plan was approved by the SANDAG Board of Directors at its meeting on October 25, 2019.

At its meeting on February 26, 2021, the SANDAG Board of Directors adopted the final 2021 RTIP.

The 2021 RTIP and its conformity determination were approved by FHWA and FTA on April 16, 2021. View the federal approval letter.

Group Project Listing

Federal regulations allow MPOs to group or combine projects that are not considered to be of appropriate scale for individual listing. Such projects may be grouped by function, work type, or geographical area and must be consistent with the exempt project classification contained in EPA's 'Transportation Conformity Regulations (40 CFR part 93).' Once grouped, the MPO is required to maintain, outside of the RTIP a detail list of the projects contained in each group.

View the 2021 RTIP Grouped Project Listings

Federal Formula Funds Distribution

SANDAG is the direct recipient of federal formula funds for Surface Transportation (RSTP), Congestion Mitigation and Air Quality (CMAQ), and federal transit funding. By Board practice, RSTP and CMAQ funds are prioritized for regional projects included in TransNet Extension Ordinance and Plan. Transit funding is allocated by an FTA approved split agreement between SANDAG and the transit agencies in the region. 

Federal Air Quality Conformity Requirements

Federal regulations require SANDAG to conduct an air quality conformity analysis of all regionally significant projects that increase the transportation system capacity. All regionally significant capacity increasing transportation projects regardless of funding sources must be included in the RTIP. Additional information on conformity can be found on the Conformity Working Group web page.

Congestion Management Process

All local agency Single Occupant Vehicle (SOV) capacity increasing projects seeking federal funds are required to perform a multimodal alternative and non-SOV analysis prior to submitting the projects for inclusion in the RTIP. Agencies are required to submit the analysis as part of the project submittal either as an upload in ProjectTrak.

Additional information regarding this process can be found in Appendix U.7 of the Regional Plan or on the Congestion Management Process web page.

Amendments to the 2021 RTIP

On July 26, 2019, the SANDAG Board of Directors delegated the authority to approve administrative modifications to the RTIP, to the SANDAG Executive Director, thereby reducing the time required to process and approve administrative modifications. The planned amendment schedule for the 2021 RTIP includes formal amendments alternating with administrative modifications. Please consult the administrative modification guidelines to determine which amendment to participate in.

Amendment No. 1
MPO Approval Date: April 23, 2021
State Approval Date: May 3, 2021
Federal Approval Date: May 7, 2021

Amendment No. 2
MPO Approval Date: April 23, 2021
State Approval Date: N/A
Federal Approval Date: N/A

Amendment No. 3
MPO Approval Date: July 23, 2021
State Approval Date: July 30, 2021
Federal Approval Date: August 13, 2021

Amendment No. 4
MPO Approval Date: July 21, 2021
State Approval Date: N/A
Federal Approval Date: N/A

Project Manager

Sue Alpert, Senior Financial Programming Analyst
Phone: (619) 595-5318, Email:

For media inquiries, please contact the SANDAG Public Information Office at (619) 699-1950 or