This week will be the last week for the toll workers on the San Francisco Bridge. Golden Gate Bridge crews are working to install a 27 foot LED sign above the toll plaza this morning to let drivers know that soon paying with cash will no longer be an option. Starting Wednesday, the bridge will no longer accept cash and there will be no human toll takers. Drivers will have to sign up for FasTrak, register a credit card account, or expect a bill after they cross. Also starting Wednesday, the toll plaza speed limit increases to 25 miles per hour up from the recommended five miles an hour now in place.