You can drive to Roosevelt Island via the Roosevelt Island Bridge, which can be accessed at 36th Avenue and Vernon Boulevard in Queens.
For detailed info on island street parking go to Parking Rules & Regulations
Visitor parking is available at the Motorgate parking garage and metered short-term parking is available on Main Street.
Motorgate is the central parking facility on the Island. It is open 24 hours a day and accessible via the first right hand turn after coming across the Roosevelt Island Bridge.
The garage is managed by SP+ Corporation and can be found at: