Im going to put my money that there are/is multiple reasons. Its private property, the piers were a safety risk (even though they removed them) , its liability for the city and company for injuries, prople trash that place, never pick up garbage or drug needles, they could be demolishing the buildings for safety... theres probably someone who complained about it and it got fenced off cuz everybody sues everybody for everything these days. Those are just my guesses. Doubt the mayors office or anybody besides land owner can do anything about it.
This is what happens when people use and abuse places like that.
Not trying to start a war over it but thats just my opinion and thoughts on it. It WAS a good place to fish. Now its over