It's a flyover above an I-95 onramp that quickly reunites with that same highway. Essentially one is back where they began, still on I-95 despite sort of having gotten off of it. But the 'bridge to nowhere' on the northbound side of 1-95 isn't actually meant to lead anywhere except right back onto I-95, according to WLRN. Instead drivers are separated from the westernmost lanes leading to Miami International Airport, while the eastern lane—its lane—eventually leads to Miami Beach. It was built in 1993 for $12 million, and that's the explanation behind I-95's weird little traffic hump.
· WLRN's Eye On The Road [WLRN]