Construction is now underway on the Oakland Alameda Access Project (OAAP), a major regional infrastructure initiative designed to improve how people travel between Alameda and Oakland. Led by the California Department of Transportation (Caltrans) in partnership with the Alameda County Transportation Commission, the project focuses on enhancing connections between I-880, I-980, and the Posey and Webster Tubes—key corridors linking the two cities.
For decades, travelers moving between Alameda and the freeway system have had to navigate congested local streets, particularly through Downtown Oakland and Chinatown. These indirect routes have contributed to significant delays, increased cut-through traffic in residential neighborhoods, and safety conflicts between vehicles, pedestrians, and cyclists. The OAAP aims to address these long-standing challenges by creating more direct freeway access and improving local roadway design.
Beyond improving vehicle circulation, the project places a strong emphasis on multimodal transportation. Planned upgrades include new and improved bicycle and pedestrian facilities, safer intersections, and a dedicated shared-use pathway in the Webster Tube. These changes are intended to strengthen connections between Downtown Oakland, Chinatown, the Jack London District, and Alameda—making it easier and safer to travel without a car.
Construction officially began in early 2026 and is expected to continue through spring 2029. While early work includes staging and setup activities, travelers should anticipate periodic lane reductions and nighttime or weekend closures of the Posey and Webster Tubes as construction progresses.
Once completed, the Oakland Alameda Access Project is expected to reduce congestion, improve safety in high-traffic areas, and support more sustainable travel options across the estuary.
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