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A pontoon bridge is a collection of specialized, shallow draft boats or floats, connected together to cross a river or canal, with a track or deck attached on top. The water buoyancy supports the boats, limiting the maximum load to the total and point buoyancy of the pontoons or boats. [ 2 ] The supporting boats or floats can be open or closed ...
Toll. $1.25–$6.30. Location. The Evergreen Point Floating Bridge, also known as the 520 Bridge and officially the Governor Albert D. Rosellini Bridge, carries Washington State Route 520 across Lake Washington from Seattle to its eastern suburbs. The 7,710-foot-long (2,350 m) floating span is the longest floating bridge in the world, [3] as ...
The Murrow Bridge is the second-longest floating bridge in the world, at 6,620 ft (2,020 m) (the longest is the Governor Albert D. Rosellini Bridge–Evergreen Point, a few miles north on the same lake). The original Murrow Bridge opened in 1940, and was named the Lake Washington Floating Bridge.
At 7,869 feet (1.490 mi; 2.398 km) in length (floating portion 6,521 feet (1.235 mi; 1.988 km)), it is the longest floating bridge in the world located in a saltwater tidal basin, and the third longest floating bridge overall. [3] It opened in 1961 and was the second concrete floating bridge constructed in Washington.
Submerged floating tunnels can be anchored to the seafloor (left) or suspended from a pontoon (right) A submerged floating tunnel (SFT), also known as submerged floating tube bridge (SFTB), suspended tunnel, or Archimedes bridge, is a proposed design for a tunnel that floats in water, supported by its buoyancy (specifically, by employing the hydrostatic thrust, or Archimedes' principle).
Float (nautical) Floats (also called pontoons) are airtight hollow structures, similar to pressure vessels, designed to provide buoyancy in water. Their principal applications are in watercraft hulls, aircraft floats, floating piers, pontoon rhinos, pontoon bridges, and marine engineering applications such as salvage.
Hood Canal is spanned by the Hood Canal Bridge, the third longest floating bridge in the world at 6,521 feet (1,988 m). According to the Washington State Department of Transportation , the Hood Canal Bridge is the only floating bridge in the United States constructed on saltwater, [ 7 ] although there are others, such as Nordhordland Bridge and ...
167 m (548 feet) Width. 9.80 m (32 feet) History. Opened. 1888, restored 1939 and 2006. Location. The Queen Emma Bridge (Dutch: Koningin Emmabrug; Papiamento: Brùg di Ponton, Brùg di Punda) is a pontoon bridge across St. Anna Bay on Curaçao island in the Dutch Caribbean. It connects the Punda and Otrobanda quarters of the capital city ...