I dropped by the ramp to see if there had been any changes since the concrete blocks stopped me from sailing last week. There was a change. A sign saying "BOAT RAMP CLOSED FOR PUBLIC USE UNTIL FURTHER NOTICE" had been added. Thanks for the clarification.
It is interesting that they specify public use. I would like to see the marine resources police, who launch(ed) patrol boats there, plus the shipyards across the river, who launch(ed) small workboats there, use the ramp with several hundred pounds of concrete blocking the way.
I do find hope in the phrase "until further notice."