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Missouri River Bridge
Society: ASCEMain Category: CivilSub Category: BridgesEra: 1920-1929DateCreated: 1920-1927ChamberlainState: SDZip: 57325Country: USAWebsite: http://www.asce.org/Project/Missouri-River-Bridges/Creator: Kirkham, John Edward

The Chamberlain is the only surviving bridge of the original five. The others were replaced as the river rose due to flood control dams put in place over time.

YearAdded:
1994
Image Caption: Members of the South Dakota Army National Guard’s 200th Engineer Company guide a raft on the Missouri River during a river crossing operation on June 11, 2016. The Chamberlain in the background is the only surviving bridge of the five. The others were replaced as the river expanded due to flood control dams.Era_date_from: 1920
Firth of Forth Railway Bridge
Society: ASCEMain Category: CivilSub Category: BridgesEra: 1890-1899DateCreated: 1890QueensferryZip: EH30 9SFCountry: UKWebsite: http://www.asce.org/Project/Firth-of-Forth-Railway-Bridge/Creator: Benjamin, Baker

"The majestic Forth Bridge ... symbolises the tremendous achievements of Victorian engineers and the immense strides made in the technique of bridge design and construction since the dawn of the Railway Age..."
 - Derrick Bennett, Bridges: Great Buildings of the World

YearAdded:
1985
Image Credit: Courtesy Flickr/Brain M Forbes (CC BY 2.0)Image Caption: The Forth Bridge became the longest bridge in the world when it was completed in 1890.Era_date_from: 1890
Fink Through Truss Bridge
Society: ASCEMain Category: CivilSub Category: BridgesEra: 1850-1859DateCreated: 1858HamdenState: NJZip: 08801Country: USAWebsite: http://www.asce.org/Project/Fink-Through-Truss-Bridge/

"Fink's truss design was one of a number of early patented solutions to [the problem of how] to carry a massive, moving weight (a train) over long spans (to avoid the expense of building piers and obstructing waterways) on easily erected bridges (often in rough terrain) with good long-term economy..." 
 - Kent Farnow Smith, "America's Oldest Functioning Iron-Truss Bridge," 1978

YearAdded:
1979
Image Credit: Courtesy Library of CongressImage Caption: This bridge is an example of the Fink truss, the most efficient solution to building long-span bridges quickly and economically during its time.Era_date_from: 1858
Bollman Truss Bridge
Society: ASCEMain Category: CivilSub Category: Bridges, TransportationEra: 1860-1869DateCreated: 1869Little Patuxent RiverSavageState: MDCountry: USAWebsite: http://www.asce.org/Project/Bollman-Truss-Bridge/Creator: Bollman, Wendel

The design of the Bollman Truss Bridge-patented in 1852 and one of the first to use iron exclusively in all essential structural elements-was critical in the rapid expansion of American railroads in the 19th century. Replacing wooden bridges, which  were cumbersome to build and vulnerable to decay, the Bollman Truss Bridge could be built relatively quickly and inexpensively, while providing the long-lasting qualities associated with metal. This allowed new rail lines to be built over long distances in a short period of time.

YearAdded:
1966
Image Credit: Courtesy Flickr/Andrew Bossi (CC BY-SA 2.0)Image Caption: Bollman Truss Bridge as it looks today, after the repairs done in 1934-84.Era_date_from: 1869
keeseville
Society: ASCEMain Category: CivilSub Category: BridgesEra: 1870-1879DateCreated: 1878AuSable RiverKeesevilleState: NYCountry: USAWebsite: http://www.asce.org/project/bridges-of-keeseville/Creator: Townsend, Soloman , Berlin Iron Bridge Company

A 214-foot single-span covered wooden bridge, built above the cribs of stone in the AuSable River that served to break log jams and ice floes, collapsed during the winter of 1875 under the weight of a three-foot snowfall and high winds. The "Upper Bridge" (pictured) was built in its place.

YearAdded:
1987
Image Credit: Public Domain (Released by Creator)Image Caption: The Keeseville Suspension Bridge built 1888, Keeseville, one of the three "Bridges of Keeseville" that span the AuSable RiverEra_date_from: 1878
Bridgeport Covered Bridge
Society: ASCEMain Category: CivilSub Category: Bridges, TransportationEra: 1860-1869DateCreated: 1862Yuba RiverPenn ValleyState: CAZip: 95946Country: USAWebsite: http://www.asce.org/Project/Bridgeport-Covered-Bridge/Creator: Virginia City Turnpike Company, Burr, Theodore

A product of the Northern California Gold Rush, the Bridgeport Covered Bridge is believed to be the longest, single-span, wooden covered bridge in the United States. Crossing the south fork of the Yuba River at a span of 233 feet, the bridge was built by the Virginia City Turnpike Company as part of a 14-mile toll road authorized by the California state legislature. The toll road was an essential link connecting Virginia City, Nevada, and the silver-producing Comstock Lode with the centers of California commerce.

YearAdded:
1970
Image Credit: Courtesy Flickr/Rick Cooper (CC BY 2.0)Image Caption: The Bridgeport Covered Bridge, one of the longest covered bridges in the nationEra_date_from: 1862
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