As long as you are not "on" the bridge anywhere on the rocks on the south side is legal. Not sure about the beach on the TI side east of the bridge to the jetty. Townsends Inlet is unique in that the line of demarkation runs along the shore line and across east of the bridge, and not from the furthest seaward points of the shoreline. All of the inlets are marked on the coastal charts.
If you do a search, the charts were all posted in a thread on this tpoic from last year.
I have been fishing Sea Isle/Townsend Inlet for over 30 years. Eventhough, there has been an increase is striper catches along the NJ coast,Sea Isle/Townsend Inlet is not a hot spot for stripers. They can be caught but it is not easy. This past year I caught some in Corcen's Inlet and the back bays of Strathmere in the spring but the fall was a challenge. Sea Isle is a good spot for bluefish,fluke and crabs. Striper fishing is increasing while the weakfish fishing is decreasing. This past spring the bays were full of bluefish. The best year I have seen for blues.
I caught of nice bass at T.I. from sept. thru dec. from land and by boat.Some guys think it's a waste of time fishing this inlet[super fast water,lots of weed] granted it can be a hard inlet to fish... but it has always been good to me.