 to the north being the other two), it is also the location of Florida's first superstreet intersection — also known as a "restricted-crossing U-turn intersection" — at Crosstown Parkway and Floresta Drive.Florida's Turnpike (State Road 91) is the only toll road in St. Lucie County, which is the northernmost place where the Turnpike and Interstate 95 run close to each other.The Turnpike has 2 exits within Port St. Lucie's city limits