A swing bridge is a movable bridge that has as its primary structural support a vertical locating pin and support ring, usually at or near to its center of gravity, about which the swing span can then pivot horizontally as shown in the animated illustration to the right. Small swing bridges as found over canals may be pivoted only at one end, opening as would a gate, but require substantial underground structure to support the pivot.
The Lacey V. Murrow Memorial Bridge is a floating bridge in the Seattle metropolitan area of the U.S. state of Washington. It is one of the Interstate 90 floating bridges that carries the eastbound lanes of Interstate 90 across Lake Washington from Seattle to Mercer Island. Westbound traffic is carried by the adjacent Homer M. Hadley Memorial Bridge.
West Seattle is a conglomeration of neighborhoods in Seattle, Washington, United States. It comprises two of the thirteen districts, Delridge and Southwest, and encompasses all of Seattle west of the Duwamish River. It was incorporated as an independent town in 1902 before being annexed by Seattle five years later. Among the area's attractions are its saltwater beach parks along Elliott Bay and Puget Sound, including Alki Beach Park and Lincoln Park. The area is also known for its views of the Olympic Mountains to the west and the Cascade Range to the east. One-third of Seattle's green space and urban forest is located in West Seattle, much of it in the West Duwamish Greenbelt.
The Burlington Northern Railroad Bridge 5.1 or BNSF Railway Bridge 5.1, also known as the St. Johns Railroad Bridge or the Willamette River Railroad Bridge, is a through truss railway bridge with a vertical lift that spans the Willamette River in Portland, Oregon, United States. Built by the Spokane, Portland and Seattle Railway (SP&S) and completed in 1908, it was originally a swing-span bridge, and its swing-span section was the longest in the world at the time. However, 81 years later the main span was converted from a swing-type to a vertical-lift type, in order to widen the navigation channel. The lift span is one of the highest and longest in the world. The bridge consists of five sections, with the two sections closest to the bank on each side fixed.
The Seven Mile Bridge is a bridge in the Florida Keys, in Monroe County, Florida, United States. It connects Knight's Key in the Middle Keys to Little Duck Key in the Lower Keys. Among the longest bridges in existence when it was built, it is part of the Overseas Highway in the Keys, which is part of the 2,369-mile (3,813 km) U.S. Route 1.
The Broadway Bridge is a vertical-lift bridge across the Harlem River Ship Canal in the borough of Manhattan in New York City. It connects the neighborhoods of Inwood on Manhattan Island and Marble Hill on the mainland. The bridge consists of two decks. The lower deck carries Broadway, which is designated as U.S. Route 9 at this location. The upper deck carries the New York City Subway's IRT Broadway–Seventh Avenue Line, serving the 1 train.
The Orwell Bridge is a concrete box girder bridge just south of Ipswich in Suffolk, England. Opened to road traffic in 1982, the bridge carries the A14 road over the River Orwell.
The Martin Luther King Bridge in St. Louis, Missouri, is a cantilever truss bridge of about 4,000 feet (1,200 m) in total length across the Mississippi River, connecting St. Louis with East St. Louis, Illinois. Opened in 1951, the bridge serves as traffic relief connecting the concurrent freeways of Interstate 55, Interstate 64, and U.S. Route 40 with the downtown streets of St. Louis. It was renamed for King in 1968 after the national civil rights leader was assassinated that year.
The West Seattle Bridge, officially the Jeanette Williams Memorial Bridge, is a cantilevered segmental bridge that serves as the primary connection between West Seattle and important highways such as State Route 99, the Spokane Street Viaduct, and Interstate 5. It was built between 1981 and 1984 after the previous bascule bridge was deemed inoperable as a result of being struck by the freighter Antonio Chavez in 1978.
The Hernando de Soto Bridge is a tied-arch bridge carrying Interstate 40 across the Mississippi River between West Memphis, Arkansas, and Memphis, Tennessee. The design is a continuous cantilevered cable-stayed steel through arch, with bedstead endposts. Memphians also call the bridge the "New Bridge", as it is newer than the Memphis & Arkansas Bridge downstream, and the "M Bridge", due to its distinctive shape. It is of similar construction to the Sherman Minton Bridge between Louisville, Kentucky, and New Albany, Indiana.
The New Richmond Swing Bridge, also known as the Fifty-Seventh Street Bridge, is a one lane swing bridge in Michigan. Located in Allegan County's Manlius Township, it connected 57th Street with Old Allegan Road over the Kalamazoo River until its closure to vehicular traffic. The name New Richmond comes from a former mining town in the area of the same name. The bridge is one of the oldest - if not the oldest - swing bridges extant in the United States, and is one of the oldest metal truss bridges in the state of Michigan and the state's longest pony truss bridge.
The Oregon Trunk Rail Bridge or Celilo Bridge is a single-track railroad bridge opened in 1912 over the Columbia River in the Pacific Northwest of the United States. It consists of eight steel truss spans and several deck girder spans, and since 1957 it has included a vertical-lift section. The bridge was designed by engineer Ralph Modjeski and erected by the Missouri Valley Bridge & Iron Co., of Leavenworth, Kansas.
Interstate 90 (I-90), designated as the American Veterans Memorial Highway, is a transcontinental Interstate Highway that runs from Seattle, Washington, to Boston, Massachusetts. It crosses Washington state from west to east, traveling 298 miles (480 km) from Seattle across the Cascade Mountains and into Eastern Washington, reaching the Idaho state line east of Spokane. I-90 intersects several of the state's other major highways, including I-5 in Seattle, I-82 and U.S. Route 97 (US 97) near Ellensburg, and US 395 and US 2 in Spokane.
The West Jefferson Avenue–Rouge River Bridge is a bridge located where Jefferson Avenue crosses the Rouge River at the border of Detroit and River Rouge, Michigan. It is the only surviving pony truss bascule bridge in the state of Michigan. It was listed on the National Register of Historic Places in 2000.
The Division Street Bridge is a road bridge located in Spokane, Washington that carries Division Street, U.S. 2, and U.S. 395 across the Spokane River in Downtown Spokane, roughly a half-mile east (upstream) of Spokane Falls. There have been multiple iterations of the bridge throughout its history. The current bridge is a concrete span and was built in 1992 and is officially known as the Senator Sam C. Guess Memorial Bridge.
The Skelton Viaduct, also known as the Hook bridge or Goole railway swing bridge, is a large viaducted hogback plate girder bridge with swing span over the River Ouse, Yorkshire near Goole, East Riding of Yorkshire, England. The bridge was designed by Thomas Elliot Harrison for the Hull and Doncaster Branch of the North Eastern Railway and opened in 1869.
At 2:38 a.m. on June 11, 1978, the freighter Antonio Chavez rammed the West Spokane Street Bridge, thereby closing it to automobile traffic for the next six years. The pilot and master were both found negligent in causing the collision. The collision led to the opening of the current West Seattle Bridge in 1984. The incident occurred in west fork of the Duwamish Waterway, as the Chavez hit the West Spokane Street Bridge which had been raised to allow the ship to pass through. This blocked eastbound traffic to West Seattle, until the westbound span was temporarily adapted to handle two-way traffic.
The West Spokane Street Bridge was a pair of bascule bridges that crossed the west fork of the Duwamish River in Seattle, Washington, United States. The bridges connected the SoDo and West Seattle neighborhoods over the river. The original bridge opened to traffic in 1924; a second bridge carrying eastbound traffic was opened in 1930, with the 1924 bridge reconfigured to carry westbound traffic.
Midtown Bridge, also known as the Salem Street Bridge and William C. Ryan Memorial Bridge, crosses over the Hackensack River between Hackensack and Bogota, in Bergen County, New Jersey, United States. The through truss bridge was originally a swing bridge built in 1900 for trolleys. It became a road bridge in 1940 and its swing span was fixed in 1984. It was closed in 2017 and slated for replacement; the rebuilt bridge reopened in April 2018.
