State of California | Department of Transportation News Release
Published on April 13, 2026
FOR IMMEDIATE RELEASE
Enhanced Safety, Access, and Community Connectivity Define the Launch of the Oakland Alameda Access Project
Alameda County — Caltrans and local partners have started construction of the Oakland Alameda Access Project. The $175 million regional investment improves safety, mobility and multimodal access between Oakland and Alameda. This effort will reduce conflicts between local and regional traffic, enhance travel between Alameda and I-880 and support long-term transportation and community goals.
Following extensive planning and community engagement, construction is beginning on upgrades that will reduce congestion, simplify freeway access and improve bicycle and pedestrian safety throughout both cities.
“The Oakland Alameda Access Project represents a significant commitment to improving mobility, safety and quality of life for the people of Oakland and Alameda,” said Caltrans District 4 Director David Ambuehl. “Through strong collaboration with our local and regional partners, we are delivering a project that enhances safety and creates safer connections for everyone who depends on these vital links between Alameda, Interstate 880 and Downtown Oakland.”
“Today's event represents an important step toward improving safety, connectivity and reliability between Oakland and Alameda," noted Alameda County Board of Supervisors President and Chair of the Alameda County Transportation Commission, David Haubert. "The Oakland Alameda Access Project reflects years of collaboration, and I want to thank our partners and the communities of both cities for their leadership and support in advancing this effort. This project reflects the vision of Measure BB and Alameda County voters' commitment to investing in transportation improvements that make our streets safer for all, and benefit residents, businesses, and travelers across the region.
A major project feature is the new “horseshoe” connection providing a direct route from the Posey Tube to northbound I‑880 and 5th Street, diverting a substantial share of freeway‑bound traffic away from Chinatown and nearby neighborhoods. The project will also reconfigure and build ramps to enhance safety and reduce cut‑through traffic.
Multimodal improvements include a new dedicated bicycle and pedestrian walkway in the Webster Tube, and upgraded bike lanes and sidewalks on city streets, creating safer routes near schools, businesses and residential areas. These features will reduce neighborhood traffic impacts, improve air quality and strengthen regional mobility.
Representatives from Caltrans, the Alameda County Transportation Commission (ACTC), the cities of Oakland and Alameda and various community partners gathered today at 1:30 p.m. for a kickoff event marking the official launch of construction.
The $175 million project is funded through a combination of local, state and federal sources. Senate Bill (SB)1, the Road Repair and Accountability Act of 2017, provided $32.4 million. Additional contributions include $37.1 million from the State Transportation Improvement Program (STIP) and $105 million from local voter-approved Measure B & BB and the Congestion Management Agency Transportation Improvement Program (CMA TIP). The project is being delivered by Caltrans in partnership with the Alameda County Transportation Commission (Alameda CTC), the California Transportation Commission (CTC), the city of Oakland, the city of Alameda, the Federal Highway Administration (FHWA), and key community and regional stakeholders.
SB 1 provides $5 billion in transportation funding annually split between the state and local agencies. Road projects progress through construction phases more quickly based on the availability of SB 1 funds, including projects that are partially funded by SB 1.
For more information about transportation projects funded by SB 1, visit build.ca.gov.
For project updates and construction notices, visit the Oakland Alameda Access Project webpage at OaklandAlamedaAccessProject.com.