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Bridges

Duck Creek Aqueduct Covered Bridge
Main Category: CivilSub Category: BridgesEra: 1840-1849DateCreated: 183919001-19041 Pennington Rd.MetamoraState: INZip: 47030Country: USA

Duck Creek Aqueduct is a rare surviving example of a covered timber aqueduct. It was one of several similar structures on the Whitewater Canal, which operated between the Whitewater Valley and the Ohio River from 1839 to 1865. After being displaced by the railroad, the canal supplied hydraulic power for the industrial districts at Metamora and Brookville.

Image Credit: Anthony Dillon
Doe River (Elizabethton) Bridge
Main Category: CivilSub Category: BridgesEra: 1880-1889DateCreated: 1884ElizabethtonState: TNZip: 37643Country: USA

Doe River Bridge is a fine example of a timber Howe truss, one of the most widely-used timber bridge designs. Built in 1884, this structure played an integral role in the development of the City of Elizabethton, Tennessee, and it is a rare example of a covered bridge that survives in an urban setting.

The original contract specified the unusual hip roof design, which resembles covered bridges in central Europe. The structure is very well-maintained and still carries automobile traffic. The bridge was restored in 2003.

Image Credit: Brent Moore, Nashville
Bunker Hill Covered Bridge
Main Category: CivilSub Category: BridgesEra: 1890-1899DateCreated: 18954160 US-70State: NCZip: 28610Country: USAWebsite: https://catawbahistory.org/bunker-hill-covered-bridgeCreator: Andrew L. Ramsour

Bunker Hill Bridge is the only surviving Haupt truss bridge in the U.S. and one of only two surviving covered bridges in North Carolina. Patented in 1839, the Haupt truss featured diagonal braces spanning multiple panels, which was an attempt to eliminate the cross-strain found in lattice truss bridges. Although it was almost immediately eclipsed by the Howe truss and never reached the mainstream of covered bridge building, the Haupt truss is of interest for its association with Gen.

Image Credit: Catawba County Historical Association
Ashuelot Covered Bridge
Main Category: CivilSub Category: BridgesEra: 1860-1869DateCreated: 186520 Hampshire Ct, , NH AshuelotState: NHZip: 03441Country: USA

The Ashuelot Covered Bridge is located at the center of Ashuelot, NH. It is a Town lattice truss bridge, spanning the Ashuelot River in a roughly north-south orientation. It consists of two spans with a total length of 178 feet (54 m). The total width of the bridge is 29 feet (8.8 m), and has a central roadway and sidewalks (measuring 3'10" in width) on each side. The bridge rests on stone abutments and a central pier. The abutments have been reinforced with concrete since the bridge was built, and the central pier has been protected by a metal breakwater.

Image Credit: Edwin S. Grosvenor
Ackley Covered Bridge
Main Category: CivilSub Category: BridgesEra: 1830-1839DateCreated: 183220900 Oakwood Blvd.DearbornState: MIZip: 48124Country: USACreator: Joshua Ackley

Ackley Bridge is an excellent example of a multiple kingpost truss and a noteworthy early example of covered bridge preservation efforts in the United States. Built in 1832 by Joshua Ackley (b.1805) and Daniel Clouse (b.1812), Ackley Bridge originally spanned Enslow’s Branch of Wheeling Creek between Greene County and Washington County in Pennsylvania, where it carried traffic for over a century.

Image Credit: The Henry FordImage Caption: The Ackley Covered Bridge was moved to the Henry Ford Museum and restored.
Lake Pontchartrain Causeway
Society: ASCEMain Category: CivilSub Category: BridgesEra: 1950sDateCreated: 1956Lake Pontchartrain CausewayNew OrleansState: LACountry: USAWebsite: http://www.asce.org/project/lake-pontchartrain-causeway-bridge/Creator: Upson, Dr. Maxwell

In the 1940s and 1950s, New Orleans experienced growth. Unfortunately, access from the north to the City continued to be limited by Lake Pontchartrain. Driving around the Lake was a time consuming effort. During this time period, a renewed interest developed to provide a direct connection across the center of the Lake to the north shore. As a result, the Greater New Orleans Expressway Commission was formed to build the Lake Pontchartrain Causeway Bridge. The original bridge (southbound) was opened on August 30, 1956.

Image Credit: Courtesy Flickr/glennaa (CC BY 2.0)
Howard Clifford running off the Tacoma Narrows Bridge during collapse
Society: ASCEMain Category: CivilSub Category: BridgesEra: 1940sDateCreated: 1940sTacomaState: WACountry: USAWebsite: http://www.asce.org/project/tacoma-narrows-bridges(1)/Creator: Eldridge, Clark

Taken together, the 1940 and 1950 Tacoma Narrows bridges mark a significant turning point in the design of long-span suspension bridges. The original 1940 structure was designed with one of the shallowest and narrowest stiffening elements of any long-span suspension bridge yet built. The structure failed dramatically in a rather moderate 42 mph windstorm on 7 November 1940, only four months after opening for traffic.

Image Caption: Howard Clifford running off the Tacoma Narrows Bridge during collapse
River des Peres Sewage & Drainage Works
Society: ASCEMain Category: CivilSub Category: BridgesEra: 1920-1929DateCreated: 1924-1921St. LouisState: MOZip: 63109Country: USAWebsite: http://www.asce.org/Project/River-des-Peres-Sewage---Drainage-Works/Creator: Horner, W.W.

In 1915, a tropical storm dropped nearly 11 inches of rain on St. Louis in just 17 hours, causing a devastating flood. Claiming 11 lives and the homes of 1,025 families, the flood focused public and government attention onto the problems of the river. 

YearAdded:
1988
Image Credit: Courtesy Wikipedia/MillbrookyImage Caption: Today, the River Des Peres Sewage & Drainage Works provides the backbone for the 110-square-mile St. Louis drainage basin.Era_date_from: 1924
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
Lacey V. Murrow Bridge and Mount Baker Ridge Tunnels
Society: ASCEMain Category: CivilSub Category: BridgesEra: 1940-1949DateCreated: 1940King County State: WAZip: 98040Country: USAWebsite: http://www.asce.org/Project/Lacey-V--Murrow-Bridge-and-Mount-Baker-Ridge-Tunnels/Creator: Murrow, Lacey V., Hadley, Homer

The 1.5 mile Lacey V. Murrow Bridge was the largest floating structure in the world and the first to be built of reinforced concrete when completed in 1940.  The bridge consisted of typically 300-foot long pontoons floated to site and rigidly connected to form a continuous structure and incorporated a unique floating concrete draw-span to allow for passage of marine traffic.  The original floating structure, constructed by Pontoon Bridge Builders, was accidentally sunk in 1990 during a major renovation effort and was replaced by 1993.

YearAdded:
2008
Image Credit: Courtesy Wikipedia/Walter SiegmundImage Caption: The bridge and tunnel project were key in improving eastern access to Seattle, a major commercial port on the eastern rim of the Pacific Ocean. Era_date_from: 1940
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