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Civil

Queensboro Bridge
Society: ASCEMain Category: CivilSub Category: BridgesEra: 1900-1909DateCreated: 1909Queensboro Bridge PathLong Island CityState: NYZip: 11101Country: USAWebsite: http://www.asce.org/Project/Queensboro-Bridge/Creator: Lindenthal, Gustav , Hornbostel, Henry

When opened in 1909, the Queensboro Bridge had the two longest steel cantilever spans in the world - 1,182 feet from Manhattan to Blackwell's Island and 984 feet from Blackwell's Island to Queens. These would remain the world's longest cantilever spans until the completion of the Quebec Bridge in 1917. The Queensboro Bridge has an overall length of 3,724.5 feet. It originally carried two elevated railway lines, two trolley lines, six carriage lanes and two pedestrian walkways. 

YearAdded:
2009
Image Credit: Courtesy Flickr/reivax (CC BY-SA 2.0)Image Caption: Queensboro BridgeEra_date_from: 1909
Quebec Bridge
Society: ASCEMain Category: CivilSub Category: BridgesEra: 1910-1919DateCreated: 1917Quebec BridgeQuebec CityState: QuebecZip: G1K 4J9Country: CanadaWebsite: http://www.asce.org/Project/Quebec-Bridge/Creator: McLure, Norman , Cooper, Theodore

The bridge is immense, not only in length and weight but in width. At 67 feet wide, it can accommodate two sets of railway tracks, two sets of streetcar tracks and two roadways.

It took three tries and cost 89 lives, but the city of Quebec was determined to compete with provincial rival Montreal for commercial rail traffic in the late 19th century. The solution was a rail bridge across the St. Lawrence River requiring a single cantilever span 1,800 feet long - the longest ever attempted. 

YearAdded:
1987
Image Credit: Courtesy Wikipedia/Sebastien Savard (CC BY-SA 2.5)Image Caption: Quebec BridgeEra_date_from: 1917
Poughkeepsie-Highland Bridge
Society: ASCEMain Category: CivilSub Category: BridgesEra: 1880-1889DateCreated: 1888Hudson RiverPoughkeepsieState: NYZip: 12528Country: USAWebsite: http://www.asce.org/People-and-Projects/Projects/Landmarks/Poughkeepsie-Highland-Bridge/, http://www.asce.org/Project/Poughkeepsie-Highland-Bridge/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.

YearAdded:
2009
Image Credit: Courtesy Flickr/bobistraveling (CC BY 2.0)Image Caption: Poughkeepsie-Highland BridgeEra_date_from: 1888
Potowmack Canal and Locks
Society: ASCEMain Category: CivilSub Category: Water TransportationEra: 1750-1799DateCreated: 1799Great Falls ParkFairfax CountyState: VACountry: USAWebsite: http://www.asce.org/Project/Potowmack-Canal-and-Locks/Creator: Washington, George, Potowmack Canal Company

These canals and locks are a part of the first extensive system of canal and river navigation works undertaken in the United States. The idea for the canal was proposed by George Washington, when, as an engineer, surveyor and military emissary for Virginia, he saw the need for a trade route west beyond the Allegheny Mountains. In order to do create this route, it was necessary to try to tame the Potomac River which was a wild, unruly stream which only the hardiest of rivermen ever attempted.

YearAdded:
1970
Image Credit: Courtesy Flickr/Rudi Riet (CC BY-SA 2.0)Image Caption: Potowmack Canal and LocksEra_date_from: 1799
Portland Head Light
Society: ASCEMain Category: CivilSub Category: Water TransportationEra: 1750-1799DateCreated: 1787Fort Williams ParkCape ElizabethState: MEZip: 04107Country: USAWebsite: http://www.asce.org/Project/Portland-Head-Light/Creator: Nichols, John , Bryant, Jonathan

The Portland Head Light was the first lighthouse to be constructed in Maine and the first one completed and put into service by the Federal government under the Lighthouse Act of 1789, which moved to place all lighthouses under federal control. While work had begun on the lighthouse in 1787 by the State of Massachusetts which, at that time, had jurisdiction over Maine, it was completed by the Federal government. When this lighthouse was being built, Portland was the sixth largest port in the country, the closest port to Europe and had significant trade with the Caribbean.

YearAdded:
2002
Image Credit: Courtesy Flickr/Bernt Rostad (CC BY 2.0)Image Caption: Portland Head LightEra_date_from: 1787
Portland Observatory
Society: ASCEMain Category: CivilSub Category: Water TransportationEra: 1800-1829DateCreated: 1807Munjoy HillPortlandState: MEZip: 04101Country: USAWebsite: http://www.asce.org/Project/Portland-Observatory/Creator: Moody, Lemuel

The Portland Observatory was built in 1807 by Captain Lemuel Moody to serve as a communication station for Portland Harbor. Portland Observatory was one of the earliest marine signal stations in the United States, and it is the last known to survive. The Observatory's location on Munjoy Hill gave it a clear view of vessels approaching Portland Harbor. The Observatory contributed to the prosperity of Portland Harbor as a vital center of maritime commerce during the "Golden Age of Sail."  

YearAdded:
2006
Image Credit: Courtesy Wikipedia/Econrad (CC BY-SA 3.0)Image Caption: Portland ObservatoryEra_date_from: 1807
Ponte Maria Pia Bridge
Society: ASCEMain Category: CivilSub Category: BridgesEra: 1870-1879DateCreated: 1877River DouroOportoState: NorteZip: 4300Country: PortugalWebsite: http://www.asce.org/Project/Ponte-Maria-Pia-Bridge/Creator: Eiffel, Gustave

Built to cross one of the steepest valleys along the Douro River, the Ponte Maria Pia was the first major work to emerge from the French firm of Gustav Eiffel  and Company, establishing Eiffel as an important bridge designer and civil engineer of his day. Resting on a parabolic arch spanning 160 meters, the Ponte Maria Pia was the longest iron arch bridge in the world at the time of its construction. The bridge's latticework construction reflects the later design of the well-known Eiffel Tower, erected in Paris to commemorate the International Exposition of 1900. 

YearAdded:
1990
Image Credit: Courtesy Flickr/Kate Watkiss (CC BY 2.0)Image Caption: Ponte Maria Pia BridgeEra_date_from: 1877
Philadelphia Municipal Water Supply
Society: ASCEMain Category: CivilSub Category: Water Supply & ControlEra: 1800-1829DateCreated: 18012600 Benjamin Franklin PkwyPhiladelphiaState: PAZip: 19130Country: USAWebsite: http://www.asce.org/Project/Philadelphia-Municipal-Water-Supply/Creator: Graff, Frederick , Latrobe, Benjamin

After an initial difficulty in attracting customers (who were used to getting their water from public pumps and private wells and cisterns), Philadelphia's waterworks soon couldn't keep up with demand. John Davis and Frederick Graff designed a complete remodeling of the system in 1811 so that it could supply the city's growing needs. 

YearAdded:
1974
Image Credit: Public Domain (National Park Service)Image Caption: Philadelphia Municipal Water SupplyEra_date_from: 1801
Philadelphia City Hall
Society: ASCEMain Category: CivilSub Category: BuildingsEra: 1900-1909DateCreated: 19011 Penn SquarePhiladelphiaState: PAZip: 19107Country: USAWebsite: http://www.asce.org/Project/Philadelphia-City-Hall/Creator: McArthur, John , Walter, Thomas

Philadelphia City Hall was the largest masonry load-bearing wall building in the world at the time of its completion in 1901, stood as the tallest occupied building in the United States until 1909, and still is the largest city hall in the United States. The building covers 14.26 acres, originally contained 634 rooms with over 1 million square feet of space, and with its tower and statue of William Penn rises a total of 548 feet above the ground. The construction of Philadelphia City Hall began in 1872 and was completed in 1901.

YearAdded:
2005
Image Credit: Courtesy Flickr/elPadawan (CC BY-SA 2.0)Image Caption: Philadelphia City HallEra_date_from: 1901
Pennsylvania Turnpike (Old Section)
Society: ASCEMain Category: CivilSub Category: Roads & Rails, TransportationEra: 1940-1949DateCreated: 1940Abandoned Pennsylvania Turnpike
Breezewood
HarrisburgState: PACountry: USAWebsite: http://www.asce.org/project/pennsylvania-tunpike-(old-section)/Creator: Pennsylvania Turnpike Commission

The Pennsylvania Turnpike was the first American paved highway of the automobile era in which tolls alone were expected to pay all project costs. The 160-mile roadway, which cut an east-west path from Pittsburgh to the state capital of Harrisburg, was considered a revolutionary example of transportation system design and served as a model for the Interstate Highway System.

YearAdded:
1988
Image Credit: Courtesy Flickr/Doug Kerr (CC BY-SA 2.0)Image Caption: Pennsylvania Turnpike (Old Section)Era_date_from: 1940
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Innovations

Forth & Clyde Canal and Union Canal

It took 22 years to complete the 35-mile waterway, as funding problems caused the work to shut down from 1777 to 1785.  

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Ifugao Rice Terraces

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Lake Washington Ship Canal & Hiram M. Chittenden Locks

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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…

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Missouri River Bridge

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