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The original wooden Union Bridge
Society: ASCE Main Category: Civil Sub Category: Era: DateCreated: 9 126th St Troy State: NY Zip: Country: Website: http://www.asce.org/project/waterford-(union)-bridge-(replaced-in-1909)/ Creator: Burr, Theodore

The Union Bridge was built in 1804 by Theodore Burr and was the first to cross the lower section of the Hudson River connecting Waterford and Lansingburg, New York. The wooden bridge's key feature was the arch that started below the deck at the abutments and ran near the top of the top chord at mid span. This was the first time in the United States that anyone had used an arch in combination with a truss in order to provide both stiffness and strength. Burr later patented his truss/arch pattern in 1806 and 1817.

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Image Credit: Image Caption: The original wooden Union Bridge before it burned down 1909 Era_date_from:
UTICA MEMORIAL AUDITORIUM
Society: ASCE Main Category: Civil Sub Category: Era: 1950s DateCreated: 1959 400 Oriskany St W Utica State: NY Zip: Country: USA Website: http://www.asce.org/project/utica-memorail-auditorium/ Creator: Zetlin, Lev

The roof system of this building, designed by Lev Zetlin and opened in 1960, was the first of its kind in the world. Before the mid-1950's, the use of long-span cable structures was generally limited to suspension bridges. The only other significant cable roof structure preceding the Utica Memorial Auditorium was the North Carolina State Fair Livestock Judging Pavilion, completed in 1953.

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2011
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The Dalles Lock and Dam
Society: ASCE Main Category: Civil Sub Category: Dams Era: 1950s DateCreated: 1956 The Dalles Dam Visitor Center The Dalles State: OR Zip: Country: Website: http://www.asce.org/project/the-dalles-lock-and-dam/ Creator:

The Dalles Lock and Dam was one of the largest, most complete, and complex multipurpose projects of its kind in the United States at the time of its construction. It provided an example for future projects benefitting navigation, recreation, water for irrigation and hydropower, fish migration, and flood mitigation. The unusual "L" configuration of the project enabled reduced construction dewatering and created a permanent shallow stilling basin that aids fish passage.

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Image Credit: Courtesy US Army Corps of Engineers Image Caption: The Dalles Lock and Dam Era_date_from:
Howard Clifford running off the Tacoma Narrows Bridge during collapse
Society: ASCE Main Category: Civil Sub Category: Bridges Era: 1940s DateCreated: 1940s Tacoma State: WA Zip: Country: USA Website: 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.

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Image Credit: Image Caption: Howard Clifford running off the Tacoma Narrows Bridge during collapse Era_date_from:
asce
Society: ASCE Main Category: Civil Sub Category: Era: 1850-1859 DateCreated: 1852 Old Croton Aqueduct Sleepy Hollow State: NY Zip: Country: USA Website: http://www.asce.org/project/site-of-the-founding-meeting-of-asce-on-nov-5,-1852/ Creator:

On October 23rd, 1852 a notice was sent to practitioners of civil engineering in and near New York City requesting their participation in developing an association that would serve the professionals who design and construct America's built environment. Twelve men responded to this invitation, meeting on November 5 in the office of Alfred W. Craven, chief engineer of the Croton Aqueduct  Department. These men became the founders of the American Society of Civil Engineers and Architects, later renamed the American Society of Civil Engineers (ASCE).

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Chicago Sanitary and Ship Canal
Society: ASCE Main Category: Civil Sub Category: Water Supply & Control Era: 1900s DateCreated: 1900 The Chicago River Chicago State: IL Zip: Country: USA Website: http://www.asce.org/project/reversal-of-the-chicago-river/ Creator:

Until 1900, the Chicago River drained into Lake Michigan, along with all the sewage from the city; and the Des Plaines River west of Chicago emptied into the Illinois River, which eventually flows to the Mississippi. Chicago residents drew their drinking water from polluted areas of the lake near the mouth of the Chicago River, leading to outbreaks of typhoid and other waterborne diseases. 

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Image Credit: Courtesy F. E. COMPTON AND COMPANY, 1914 (PD-US-1923) (CC BY-SA 3.0) Image Caption: Chicago Sanitary and Ship Canal (at the time named the Chicago Drainage Canal) Era_date_from:
Russell Sage Laboratory
Society: ASCE Main Category: Civil Sub Category: Education Era: 1800-1829 DateCreated: 1824 Rensselaer Polytechnic Institute Troy State: NY Zip: Country: USA Website: http://www.asce.org/project/rensselaer-polytechnic-institute/ Creator:

Amos Eaton and Stephen Van Rensselaer founded the Rensselaer School for "the application of science to the common purposes of life" in 1824. Eaton had practiced surveying as a teenager building his own compass and chain and wrote an early book on surveying. Later he studied law before becoming interested in geology and agriculture. Stephen Van Rensselaer was the seventh patroon of Rensselaerwyck a track of land comprising most of the current Rensselaer, Albany and Columbia Counties in the State of New York.

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Image Credit: Image Caption: Russell Sage Laboratory, Front View, 1909- Era_date_from:
Point of Beginning, U.S. Public Lands
Society: ASCE Main Category: Civil Sub Category: Boundaries & Surveys Era: 1750-1799 DateCreated: 1785 East Liverpool State: OH Zip: 43920 Country: USA Website: http://www.asce.org/Project/Point-of-Beginning,-U-S--Public-Lands/ Creator: Hutchins, Thomas

The "Land Ordinance of 1785" required that U.S. lands in the public domain be surveyed before sale, and that the surveys be made in accordance with a consistent, integrated system of lines grid-oriented to a true meridian (north-south reference line) and base line (east-west reference line), subdividing the land into approximately square parcels, called townships.  

Thomas Hutchins, the first Geographer of the United States, drove his stake near East Liverpool, Ohio to mark the Point of Beginning of the Geographer's Line, the first westward base line.

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1985
Image Credit: Courtesy Wikipedia/Nyttend Image Caption: This monument marks the site that served as the basis for the entire Public Land Survey System — the system by which most of the United States, outside of the original colonies, was surveyed. Era_date_from: 1785
Emanuel Bowen's 1747 map showing the boundary between Virginia and North Carolina.
Society: ASCE Main Category: Civil Sub Category: Boundaries & Surveys Era: 1700-1749 DateCreated: 1728-1821 Middlesboro State: KY Zip: Country: USA Website: http://www.asce.org/Project/Royal-Colonial-Boundary-of-1665/ Creator: Charles II

The Royal Colonial Boundary of 1665 was decreed by England's King Charles II to demarcate his American colonies. It provided a survey from the Atlantic Ocean to the Mississippi River along 36 degrees, 30 minutes north latitude. The boundary now serves to divide Virginia from North Carolina and Kentucky from Tennessee. 

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1985
Image Credit: Image Caption: Emanuel Bowen's 1747 map showing the boundary between Virginia and North Carolina. Era_date_from: 1728
Vancouver's Mapping of the West Coast of North America
Society: ASCE Main Category: Civil Sub Category: Boundaries & Surveys Era: 1750-1799 DateCreated: 1791-1795 West Coast of North America N/A State: Zip: Country: USA Website: https://www.asce.org/project/vancouver-s-mapping-of-the-west-coast-of-n-a-/ Creator: Vancouver, George

The voyage of Captain George Vancouver, 1791 -1795, was commissioned by the British Admiralty to map in detail the west coast of North America from Mexico to Alaska and to meet with Spanish authorities on the coast to enforce the terms of the Nootka Sound Convention of 1790. 

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2009
Image Credit: Courtesy Wikipedia/Robbot Image Caption: A view of Mount Rainier from Captain Vancouver's voyage. Era_date_from: 1791
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