Robert Moses Causeway in the context of "Fire Island"

The Great South Bay is a lagoon situated between Long Island and Fire Island, in the State of New York. It is about 45 miles (72 km) long and has an average depth of 4 feet 3 inches (1.3 m) and is 20 feet (6.1 m) at its deepest. It is protected from the Atlantic Ocean by Fire Island, a barrier island, as well as the eastern end of Jones Beach Island and Captree Island.

The Robert Moses Causeway adjoins the Great South Bay Bridge, which leads to Robert Moses State Park.

Fire Island National Seashore (FINS) is a United States National Seashore that protects a 26-mile (42 km) section of Fire Island, an approximately 30-mile (48 km) long and 0.5-mile (0.80 km) wide barrier island separated from Long Island by the Great South Bay. The island is part of New York State's Suffolk County and the Outer Barrier.

There are 17 private communities within the boundaries of Fire Island National Seashore including Saltaire, Fire Island Pines, and Ocean Beach. Only two bridges lead to Fire Island and the national seashore and there are no public roads within the seashore itself. The Robert Moses Causeway leads to Robert Moses State Park on the western end of Fire Island while the William Floyd Parkway leads to the eastern end of the island. The seashore can also be accessed by private boat or by ferry from the communities of Patchogue, Sayville, and Bay Shore on Long Island.

Robert Moses State Park is a 875-acre (3.54 km) state park in southern Suffolk County, New York. The park lies on the western end of Fire Island, one of the central barrier islands off the southern coast of Long Island, and is known for its five-mile (8.0 km) stretch of beaches on the Atlantic Ocean. The park is accessible from Long Island by the Robert Moses Causeway across Great South Bay.

Established as Fire Island State Park in 1908, the park is the oldest state park on Long Island. It was renamed to honor Robert Moses, the influential mid-20th century urban planner and former president of the Long Island State Park Commission. Recently, lawmakers have suggested the park should revert to its previous name or to something that better reflects its location.

Captree is a census-designated place (CDP) in the towns of Islip and Babylon in Suffolk County, New York, United States. It occupies Captree Island in Great South Bay, as well as the east end of Jones Beach Island to the south, comprising Captree State Park. It was first listed as a CDP prior to the 2020 census. Prior to that it was part of the Oak Beach–Captree CDP.

The community is in southwestern Suffolk County, on two islands that lie between Long Island to the north and Fire Island to the south. The eastern two-thirds of the CDP are in the town of Islip, while the one-third of the CDP that occupies the portion of Captree Island west of the Robert Moses Causeway is in the town of Babylon. The Robert Moses Causeway connects Captree and Jones Beach islands with West Islip, 6 miles (10 km) to the north on Long Island. Ocean Parkway runs west from Captree through Oak Beach and Gilgo, leading 14 miles (23 km) to Jones Beach State Park. To the south, the Fire Island Inlet Bridge leads 1 mile (1.6 km) to Robert Moses State Park on Fire Island.

The Great South Bay Bridge (historically known as the Captree Bridge) is a twin-span bridge on the southwest side of Suffolk County, New York, on Long Island. It carries the Robert Moses Causeway over the Great South Bay, between Long Island's South Shore and Captree Island. It serves as access via the Robert Moses Causeway to both of the downstream crossings, the State Boat Channel Bridge and the Fire Island Inlet Bridge, also leading visitors and on-lookers to the Captree State Park, Fire Island Lighthouse, Jones Beach Island, or Robert Moses State Park. The Great South Bay Bridge also appears on the New York VFR Sectional Chart as a VFR reporting point, under the name Robert Moses Causeway Twin Bridge.

Captree State Park is a 340-acre (1.4 km) state park located in the towns of Babylon and Islip in Suffolk County, New York, United States. The park is located south of Captree Island on the easternmost end of Jones Beach Island, and overlooks the Fire Island Inlet and the westernmost section of Fire Island.

Captree State Park can be accessed via the Robert Moses Causeway and the Ocean Parkway. The park primarily provides boating and fishing access to the Atlantic Ocean and Long Island's Great South Bay, and numerous charter boats are available for fishing excursions.

The Ocean Parkway (abbreviated as OP) is a 15.59-mile (25.09 km) limited-access parkway that traverses Jones Beach Island between Jones Beach State Park and Captree State Park on Long Island, New York, United States. It begins at the southern terminus of the Meadowbrook State Parkway and heads east across Jones Beach Island, intersecting the south end of the Wantagh State Parkway before ending just past the Robert Moses Causeway.

The highway is designated New York State Route 909D (NY 909D), an unsigned reference route – and it is listed on the National Register of Historic Places as a contributing asset to the Jones Beach State Park, Causeway and Parkway System historic district.