You USED to be able to stop and boondock, and eat on the south most island of the south most tunnel of the Bay Bridge/Tunnel (South Thimble Island) at a restaurant and fishing pier, however................. Its all closed due to construction of the new parallel tunnels................ sigh.
http://www.cbbt.com/activities/restaurant-gift-shop/All of these businesses have relocated to the north toll plaza area, and there is a KOA just north of the toll plaza plus the Eastern Shore VA tourist welcome station. Might be a good area to take a break or stop for the night.
Charles