Interstate 580 Iron Horse Parkway Interchange

Project Description

The Iron Horse Parkway Project consists of the construction of an interchange along I-580 at the undercrossing that currently connects Hansen Road north of I-580 to the private properties south of the interstate. The project will widen the existing facility to a 2-lane structure. The first alternative will be in a narrow diamond interchange configuration. The second one will be a spread diamond type. The third alternative will be identical to the spread diamond interchange, but with an additional loop ramp to connect southbound Iron Horse Parkway traffic to I-580 Eastbound mainline.


Project Benefits


Reduce congestion and delays that will adversely affect efficient goods movement to and from nearby warehousing facilities that provide needed goods and services to the Bay Area, San Joaquin Valley, and points beyond; provide a secondary access point for labor and freight to I-580 and emergency/incident management; and provide improved access to the proposed Valley Link passenger rail station.


To accommodate the increase in jobs, goods movement, and resulting increase in traffic demand from development in the Central Valley Gateway, which will add nearly 17 million square feet of development and 20,000 jobs by 2030; improve reliability to ensure on-time freight service and employee schedule, and direct access to I-580 for emergency/incident management; and improve transit rider access from south and east San Joaquin and Stanislaus Counties to the Valley Link passenger rail station via I-580.


Funding Source

Project sponsors is Prologis and intends to pursue the Project Approval & Environmental Document (PA&ED) phase as a project funded by others, but intends to develop a funding plan that includes regional, state, and federal sources. However, many of these sources are still subject to legislative actions, particularly the Federal Infrastructure Package and the California Legislature’s consideration of general fund surplus revenues for transportation. Regionally, San Joaquin Council of Governments (SJCOG) is considering a future renewal of the Measure K half-cent sales tax for transportation. In light of the discretionary decisions yet to be made, project sponsors intend to pursue existing funding opportunities such as the State Transportation Improvement Program (STIP), the Trade Corridors Enhancement Program (TCEP), the Local Partnership Program (LPP), the Federal Rebuilding American Infrastructure with Sustainability and Equity (RAISE), and the San Joaquin County Transportation Improvement Fee (TIF).


Project Cost/Programmed

 Programed Project Cost Capital $ Support $
Project Approval & Environmental Document $0 To Be Determined
Plans, Specifications, & Estimates $0 To Be Determined
Right of Way $1,200,000 - $2,800,000 To Be Determined
Construction $26,500,000 - $45,700,000 To Be Determined


Current Schedule

 Process Date
Project Study Report (M010) 1/2022
Project Approval & Environmental Document (M200) 12/2023
Right of Way Certification (M410) 10/2024
Ready to List (M460) 2/2025
Approved Construction Contract (M500) 4/2025
Project Completion (M600) 10/2026


Project Status

Complete Project Study Report


Project Contact

Caltrans District 10 - Public Information Office
Phone: (209) 948-7977


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.