Part of the daily dredging work involves up to six barges making multiple trips from the Turning Basin to the disposal site in San Pablo Bay. The D Street Bridge would need to be in the “raised” position for a barge to pass through.
Unfortunately, the Bridge’s electrical system cannot support consecutive raising/lowerings, on any given day or for multiple consecutive days. The project team evaluated several options: limit the raising/lowering to two or three times per day, which would lessen the impact on vehicle traffic but extend the project several weeks; keep the bridge raised 24×7 for two weeks, which would allow the dredging operators to work Saturdays and shorten the project timeline but create greater inconvenience to the community; or keep the bridge raised on weekdays and then lower it on weekends, which would extend the project by a few days and would lessen the impact on traffic during the busy weekend.
The decision was made to raise the bridge at the beginning of each work week during the project (Sunday evening/early Monday morning) and then lower it at the end of each work week (approximately 7:00 p.m. Friday), keeping it lowered — and thus open to traffic – Friday evening through Sunday evening. This approach will streamline the dredging and shorten the total project duration, reduce the risk of the D-Street bridge malfunctioning caused by frequent opening and closings, avoid confusion, and minimize costs associated with closing the bridge every night and opening it every morning.
For more information on the Turning Basin Dredging & Dock Restoration (2022), CLICK HERE.