 The lot is entirely circumscribed by the access roads to the park, with the roundabout located at its southeast corner, and the interchange with the Marine Park Bridge located near its northwest corner.The parking lot was managed by the Marine Parkway Authority (which constructed and operated the Marine Parkway Bridge) until 1940, when it was merged with Robert Moses' Triborough Bridge and Tunnel Authority (TBTA).The TBTA operated the parking lot until 1968, when it in turn was merged with the Metropolitan Transportation Authority (MTA)'s Bridges and Tunnels division.