Posey Tube Rehabilitation

The Posey Tube retrofit project includes safety modifications and rehabilitation work within the Posey and Webster Tubes on Route 260 in Alameda County in the cities of Oakland and Alameda. The Posey and Webster Tubes under the Oakland Inner Harbor waterway provide vehicular and pedestrian connectivity between the two cities. Within both tube structures, upgrades will be done on sidewalks, guardrails, lighting and signage. The project also will rehabilitate the historic portal buildings approaches for the Posey Tube on both the Alameda and Oakland sides.