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Old Wisla Bridge
Society: ASCE Main Category: Civil Sub Category: Bridges Era: 1850-1859 DateCreated: 1850-1857 Vistula River Tczew State: Zip: Country: Poland Website: Creator: Lentze, Carl

Conceived as one of the major structures on the Prussian Eastern Railway, the Old Wisla Bridge at Tczew originally consisted of six wrought iron spans. Due to Germany's invasion of Poland at the beginning World War II in 1939, only three original spans remain today. These remaining spans represent a unique technical monument of civil engineering achievements in the mid-nineteenth century.

Image Credit: Courtesy Wikicommons/Topory (CC BY-SA 3.0) Image Caption: Old Wisla Bridge Era_date_from: 1850
Whipple Truss Bridge
Society: ASCE Main Category: Civil Sub Category: Bridges Era: 1850-1859 DateCreated: 1855 Schenectady State: NY Zip: Country: USA Website: Creator: Whipple, Squire

The Whipple Bowstring Truss Bridge was built from a design patented in 1841 by Squire Whipple. Whipple was the first person to understand the stresses in truss members and he developed the first theoretical formula to calculate stresses in the articulated truss. His bowstring truss was the first to use cast iron for compression and wrought iron for tension membranes.

Image Credit: Courtesy Wikicommons/Rehrenberg Image Caption: A Whipple Bowstring Arch/Truss style bridge, built by S. DeGraff in Albany, NY Era_date_from: 1855
Walnut Street Bridge
Society: ASCE Main Category: Civil Sub Category: Bridges Era: 1890-1899 DateCreated: 1890 Susquehanna River Harrisburd State: PA Zip: 17101 Country: USA Website: Creator: Bollman, Wendel , Reeves, Samuel

The structure has two segments: an East Channel bridge consisting of four 175-foot spans and three 240-foot spans crossing from Harrisburg to City Island; and a West Channel bridge, consisting of seven 175-foot spans crossing from City Island to Wormleysburg.

With 15 truss spans totaling 2,820 feet, the Walnut Street Bridge is the finest and largest surviving example of the standardized Phoenix wrought-iron truss bridges produced from 1884 to 1923.

Image Credit: Courtesy Flickr/rjonesProject856 (cc-by-2.0) Image Caption: Walnut Street Bridge Era_date_from: 1890
Triborough Bridge Project
Society: ASCE Main Category: Civil Sub Category: Bridges Era: 1930-1939 DateCreated: 1936 Robert F. Kennedy Bridge New York State: NY Zip: 10035 Country: USA Website: Creator: Moses, Robert , Ammann, Othmar

The Triborough Bridge Project is a three-branched waterway crossing that connects Manhattan, the Bronx, and Queens at a junction of the East River and the Harlem River in New York City. The complex structure includes a suspension bridge from Wards Island to Queens, a vertical lift span from Randall's Island to Manhattan, a fixed span (designed to be convertible to a lift span) across the Bronx Kills, viaducts, and an innovative three-legged roadway interchange.

Image Credit: Public Domain (National Park Service) Image Caption: Triborough Bridge Project Era_date_from: 1936
Poughkeepsie-Highland Bridge
Society: ASCE Main Category: Civil Sub Category: Bridges Era: 1880-1889 DateCreated: 1888 Hudson River Poughkeepsie State: NY Zip: 12528 Country: USA Website:, Creator: Clarke, Thomas , Macdonald, Charles

A bridge across the Hudson at or near Poughkeepsie was planned starting in the early 1870s to primarily carry coal from the coalfields of northeastern Pennsylvania to New England. At the time there were no bridges between Albany and New York Harbor. Horatio Allen, soon to be President of the ASCE, was its first Chief Engineer. He designed a multiple span suspension bridge. Later the American Bridge Company started construction on a five span bridge but went bankrupt before it completed the first pier foundations.

Image Credit: Courtesy Flickr/bobistraveling (CC BY 2.0) Image Caption: Poughkeepsie-Highland Bridge Era_date_from: 1888
The Tabernacle in December 2008
Society: ASCE Main Category: Civil Sub Category: Buildings Era: 1860-1869 DateCreated: 1867 Mormon Tabernacle Salt Lake City State: UT Zip: 84150 Country: USA Website: Creator: Grow, Henry

Just 20 years after settling the uninhabited Salt Lake valley, Brigham Young and his Mormon followers completed one of the nation's most impressive public structures. The 9,000-seat Mormon Tabernacle boasts a clear span roof measuring 150 feet by 250 feet, its timber trusses joined with wooden pegs and lashed with green rawhide, which shrank and tightened as it dried.

Image Credit: Courtesy Wikicommons/Leon7 (CC BY-SA 3.0) Image Caption: The Tabernacle in December 2008. Era_date_from: 1867
Bunker Hill Covered Bridge
Society: ASCE Main Category: Civil Sub Category: Bridges Era: 1890-1899 DateCreated: 1894 Lyle Creek Catawba County State: NC Zip: Country: USA Website: Creator: Ramsour, Andy, Haupt, Herman

In 1894, Catawba County, North Carolina commissioners asked local landowners to build and maintain an 85-foot-long bridge across Lyles Creek. The community hired Andy L. Ramsour, who served as keeper of the Horseford covered bridge over the Catawba River in Hickory, North Carolina.

Image Credit: Public Domain (National Park Service) Image Caption: Bunker Hill Covered Bridge Era_date_from: 1894
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