My husband is wondering the same thing. It's in the area near Whiskey Bravo, east of where the bike path crosses 30A. I think that's right. He's there; I'm not.
Do you remember how the bike path swerved south for a short distance in front of the old Seagrove Villas? My guess is that they're straightening out the bike path there. Also it has probably been damaged by the heavy trucks needed for hauling materials to the new home construction where Seagrove Villas once was. Just a guess.