Overview
- The National Park Service closed the island to all public visits and private drop‑offs starting Monday for a roughly three‑week project to replace deteriorating ferry‑dock pilings.
- Crews will perform pile driving and full replacement of the remaining pilings in a complex operation that Alcatraz City Cruises is funding and overseeing.
- Ticket holders for affected sailings will receive refunds and Alcatraz City Cruises is offering a 90‑minute San Francisco Bay Discovery Cruise as an alternative through Nov. 1.
- Pier 33 vendors and pedicab operators said the shutdown will sharply cut daily foot traffic and revenue, with small businesses already preparing route or sales adjustments.
- Officials moved to do the work now because the San Francisco Bay Conservation and Development Commission limits in‑water construction after Nov. 30 and the schedule could still shift for bad weather or other delays.