Leaper's Bridge
The Leaper's Bridge is the shortest island crossing in Liberty City in Grand Theft Auto IV. It connects Algonquin and Colony Island. The name may come from the fact that the island it connects to Colony Island, which was in fact a leper colony.
Based on its location, it is where the Roosevelt Island Bridge in New York City is in real life. However, it bears no resemblance to the actual Roosevelt Island Bridge.