Major Improvements Are Coming To Webster And Posey Tubes — But So Are Delays

ALAMEDA, CA — The Oakland Alameda Access Project is set to break ground this fall, with construction expected to impact City of Alameda travelers for more than 12 months, city officials announced this week.

Led by Caltrans, the project aims to improve safety, ease congestion, and enhance bike and pedestrian access in downtown Oakland and Alameda. The current route between I-880, I-980, and the Webster and Posey Tubes forces motorists through a maze of crowded city streets, creating daily bottlenecks and increasing the risk of vehicle-pedestrian incidents—especially in neighborhoods like Oakland’s Chinatown.

“The goal is to make traffic flow more safely and efficiently, not only for drivers but for people walking and biking through these impacted communities,” said city officials.

While the overall construction is expected to last approximately 3.5 years, the direct impact to Alameda will begin this fall and continue for over a year. Drivers should anticipate delays through the Webster and Posey Tubes, along with occasional nighttime and weekend closures.

A planned detour will redirect traffic from Lincoln Avenue to Park Street, then onto northbound I-880 via the Oak Street exit. The city urges commuters to plan ahead, monitor updates, and explore alternate routes when possible.

More information about schedules, closures, and detour maps will be made available as the construction start date approaches.