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1968

Central Pacific Railroad
Society: ASCEMain Category: CivilSub Category: Roads & RailsEra: 1860-1869DateCreated: 1863-1869Western AmericaOgdenState: UTCountry: USAWebsite: http://www.asce.org/project/central-pacific-railroad/Creator: Judah, Theodore , Crocker, Charles

Central Pacific Railroad served as the Western terminus of America's first transcontinental railroad, passing through the formidable Sierra Nevada Mountains. In all, 15 tunnels were blasted through solid granite. 

Thousands of Chinese from Kwantung Province were recruited by Central Pacific Railroad Company and became known for their diligence and hard work. In the second year of construction, nine out of ten workers on the CPRR were Chinese.

YearAdded:
1968
Image Credit: Courtesy Flickr/Jim Bowen (CC BY 2.0)Image Caption: Central Pacific RailroadEra_date_from: 1863
Ellicott's Stone
Society: ASCEMain Category: CivilSub Category: Boundaries & SurveysEra: 1750-1799DateCreated: 1799Unnamed RdBucksState: ALZip: 36512Country: USAWebsite: https://www.asce.org/project/ellicott-stone/Creator: Ellicott, Andrew

The stone was set by the joint U.S.-Spanish survey party on April 10, 1799.  Made of sandstone, it is roughly two feet high and eight inches thick. On the north side of the stone is the inscription "U.S. Lat. 31, 1799." On the south side is "Dominio de S.M. Carlos IV, Lat. 31, 1799."

YearAdded:
1968
Image Credit: Public Domain (Author's Choice)Image Caption: Ellicott's StoneEra_date_from: 1799
Wheeling Suspension Bridge
Society: ASCEMain Category: CivilSub Category: BridgesEra: 1840-1849DateCreated: 1848Ohio RiverWheelingState: WVZip: 26003Country: USAWebsite: http://www.asce.org/Project/Wheeling-Suspension-Bridge/Creator: Ellet, Charles

The Wheeling Suspension Bridge was the first bridge to span the Ohio River. It was initially completed in 1849, but destroyed by a tornado five years later. The bridge was rebuilt in 1856. The replacement bridge has the same general appearance of the original structure; the massive towers, anchorage housings, and island approach are all the original stone masonry.

YearAdded:
1968
Image Credit: Photo by Edwin S. Grosvenor (CC BY 2.0)Image Caption: Wheeling Suspension BridgeEra_date_from: 1848
Durango and Silverton Narrow Gauge railway runs along the Highline.
Society: ASCEMain Category: CivilSub Category: Roads & RailsEra: 1880-1889DateCreated: 1882DurangoState: COCountry: USAWebsite: http://www.asce.org/project/durango-silverton-narrow-gauge-br-of-the-d-rgwr/Creator: Palmer, William Jackson , Denver and Rio Grande Western Railroad

The Durango-Silverton Narrow Gauge Branch of the Denver & Rio Grande Western Railroad extends from the town of Durango to the mining camp of Silverton. Built in 1882 through one of the most rugged mountain areas of the nation, its complexity remains a testament to the role civil engineering played in the development of the western United States. 

The tracks rise up the sheer, steep Animas Canyon, running along a rock ledge just wide enough to carry the train. The line is used today as a tourist attraction, carrying visitors through the picturesque San Juan Mountains.

YearAdded:
1968
Image Caption: Durango and Silverton Narrow Gauge railway runs along the Highline.Era_date_from: 1882
The Espada Aqueduct, running over the Piedras Creek
Society: ASCEMain Category: CivilSub Category: Water Supply & ControlEra: 1700-1749DateCreated: 1718-1744San Antonio Missions National Historical ParkSan AntonioState: TXZip: 78221Country: USAWebsite: http://www.asce.org/project/acequias-of-san-antonio/Creator: Franciscan friars

This is one of the earliest uses of engineered water supply and irrigation systems in the United States. The first of eight original acequias was under construction in 1718 and two are still in operation. The remains of one are visible on the grounds of the Alamo. The Acequias of San Antonio are among the earliest engineered water supply and irrigation systems recorded in the United States. The Acequias served an integral role in the growth and stability of the San Antonio community for nearly 200 years.

YearAdded:
1968
Image Credit: Courtesy: Flickr/Amy the Nurse (CC BY-ND 2.0) Image Caption: The Espada Aqueduct, running over the Piedras CreekEra_date_from: 1718
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