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Union Canal Tunnel
Society: ASCEMain Category: CivilSub Category: TunnelsEra: 1800-1829DateCreated: 1828Union CanalLebanonState: PACountry: USAWebsite: http://www.asce.org/Project/Union-Canal-Tunnel/Creator: Ives, John

According to oral history, George Washington visited the canal diggings in 1792, and then again in 1794, while he was accompanying troops to suppress the Whiskey Rebellion in Western Pennsylvania. 

YearAdded:
1970
Image Credit: Courtesy Flickr/Ospreye (CC BY 2.0)Image Caption: Union Canal TunnelEra_date_from: 1828
St. Clair Tunnel
Society: ASCEMain Category: CivilSub Category: TunnelsEra: 1890-1899DateCreated: 1891Beneath the St. Clair RiverSarniaState: ONZip: N7T 8G8Country: CanadaWebsite: http://www.asce.org/Project/St--Clair-Tunnel/Creator: Hobson, Joseph , Beach, Alfred

A Day's Pay According to tunnel records, the following pay rates were established for the 600-700 laborers required for this project: 

YearAdded:
1991
Image Credit: Public DomainImage Caption: Postcard of the west end St. Clair River Tunnel in Port Huron, Michigan, United States.Era_date_from: 1891
Moffat Tunnel
Society: ASCEMain Category: CivilSub Category: Tunnels, Water Supply & ControlEra: 1920-1929DateCreated: 1928Thru the Continental DivideNederlandState: COZip: 80466Country: USAWebsite: http://www.asce.org/Project/Moffat-Tunnel/Creator: Moffat, David , Moffat Tunnel Improvement District

Known as "the highest and lowest holing in history," the tunnel bored through the Rockies at an elevation of 9,200 feet, 2,800 feet below the surface. Eight hundred men worked around the clock for 3 1/2 years, moving 3 billion pounds of rock. 

YearAdded:
1979
Image Credit: Courtesy Flickr/Bradley Gordon (CC BY 2.0)Image Caption: Moffat TunnelEra_date_from: 1928
Icing Research Tunnel, NASA Lewis Research Center
Society: ASMEMain Category: MechanicalSub Category: Research and DevelopmentEra: 1940-1949DateCreated: 1944Glenn Research CenterClevelandState: OHZip: 44135Country: USAWebsite: http://www.asme.org/about-asme/history/landmarks/topics-m-z/research-and-development/-117-icing-research-tunnel,-nasa-lewis-research-ce, https://www.asme.org/getmedia/f9fb127c-7ba2-4b73-ba34-75fca7265485/117-Icing-Research-Tunnel-NASA-Lewis-Research-Ce.aspx

In operation since 1944, the Icing Research Tunnel is the oldest and largest refrigerated icing wind tunnel in the world. Technology developed there enables aircraft to fly safely through icing clouds. Two firsts include the unique heat exchanger and the spray system that simulates a natural icing cloud of tiny droplets.

YearAdded:
1987
Image Credit: Courtesy NASAImage Caption: Cleveland Mayor, Frank G. Jackson, tours the Icing Research TunnelEra_date_from: 1944
Society: ASMEMain Category: MechanicalSub Category: Environmental ControlEra: 1920-1929DateCreated: 1920Hudson River Greenway; ManhattanNew YorkState: NYCountry: USAWebsite: http://www.asme.org/about-asme/history/landmarks/topics-a-l/environmental-control/-93-holland-tunnel-ventilation-system-%281920%29Creator: Freeman, Milton
The first long underwater tunnel in the world designed for motor vehicle use was built from 1920 to 1927. The 29.5-foot-diameter, 8,500-foot-long twin tubes of this tunnel were shield-driven by the pneumatic method through extremely difficult river-bottom conditions that were overcome by the ingenuity and determination of its engineers, Clifford M. Holland, Milton H. Freeman, and Ole Singstad. They were the largest in the United States when built.
YearAdded:
1984
Image Credit: Courtesy Flickr/Bill Benzon (CC BY-SA 2.0)Image Caption: Holland Tunnel Ventilation SystemEra_date_from: 1920
Gunnison Tunnel
Society: ASCEMain Category: CivilSub Category: TunnelsEra: 1900-1909DateCreated: 1909MontroseState: COCountry: USAWebsite: http://www.asce.org/Project/Gunnison-Tunnel/Creator: Bureau of Reclamation

At its completion, the 5.8-mile Gunnison Tunnel under western Colorado's Vernal Mesa was the longest irrigation tunnel in America. It carried water from the Gunnison River to the Uncompahgre Valley to irrigate 146,000 acres of cropland. 

Work on the 30,582-foot tunnel was first performed manually. Adverse geological conditions provided great challenge for this pioneering project. The drilling crews had to deal with clay, sand, shale, and a badly fractured fault zone. 

YearAdded:
1972
Image Credit: Public Domain; Produced prior to 1/1/1923Image Caption: Gunnison TunnelEra_date_from: 1909
Detroit-Windsor Tunnel
Society: ASCEMain Category: CivilSub Category: TunnelsEra: 1930-1939DateCreated: 1930-Windsor TunnelDetroitState: MIZip: 48226Country: USAWebsite: http://www.asce.org/project/Detroit-Windsor-Tunnel/Creator: Value, Burnside, Thoresen, Søren Anton

The Detroit-Windsor Tunnel is a 5,160-foot structure that carries traffic under the Detroit River between Detroit, Michigan and Ontario, Canada. Privately financed, built, and owned, it was completed in 26 months, 10 months ahead of schedule. 

YearAdded:
1982
Image Credit: Courtesy Flickr/Brian Rawson-Ketchum (CC BY-SA 2.0)Image Caption: Detroit-Windsor TunnelEra_date_from: 1930
Crozet's Blue Ridge Tunnel
Society: ASCEMain Category: CivilSub Category: Roads & Rails, Transportation, TunnelsEra: 1850-1859DateCreated: 1858Blue Ridge RailroadWaynesboroState: VAZip: 22980Country: USAWebsite: http://www.asce.org/People-and-Projects/Projects/Landmarks/Crozet-s-Blue-Ridge-Tunnel/Creator: Crozet, Claudius

One of four single-track tunnels built by the Blue Ridge Railroad, the 4,273-foot Crozet Tunnel was constructed at a time when hand drills, pickaxes, and black powder amounted to state-of-the-art tunneling technology. At the time of its completion, it was the longest railroad tunnel in the world. Envisioned and built by Claudius Crozet, a French-born educator and civil engineer, the tunnel remains a testament to his belief in advancing rail transportation even when faced with numerous difficulties. 

YearAdded:
1976
Image Credit: Public Domain (National Park Service)Image Caption: Crozet's Blue Ridge TunnelEra_date_from: 1858
Montgomery Bell's Tunnel
Society: ASCEMain Category: CivilSub Category: TunnelsEra: 1800-1829DateCreated: 1818Harpeth River State ParkKingston SpringsState: TNZip: 37082Country: USAWebsite: http://www.asce.org/Project/Montgomery-Bell-s-Tunnel/Creator: Bell, Montgomery

Montogomery Bell was a land developer and iron maker who purchased the Harpeth Narrows site to expand his industrial empire - which ultimately consisted of 14 iron blast furnaces throughout middle Tennessee.

The Harpeth River makes a tight bend around a steep limestone ridge, losing 17 feet of elevation in a run of 5 1/2 miles. Bell excavated a tunnel through the limestone ridge, creating a shortcut for the river. The hydropower derived from this drop in elevation was used to drive the Patterson Iron Works built by Bell.

YearAdded:
1981
Image Credit: Public Domain (Author's Choice)Image Caption: Montgomery Bell's TunnelEra_date_from: 1818
Holland Tunnel
Society: ASCEMain Category: CivilSub Category: TunnelsEra: 1920-1929DateCreated: 1927Hudson RiverJersey CityState: NJZip: 07310Country: USAWebsite: http://www.asce.org/Project/Holland-Tunnel/Creator: Holland, Clifford

The 1.6-mile Holland Tunnel was the first underwater vehicular crossing of the Hudson River and the first tunnel specifically designed for automobiles and trucks. It dramatically reduced the time required to traverse the Hudson River, a trip previously possible only by ferry. 

A major difficulty when tunneling beneath a river is to keep water and mud from inundating the workers and equipment in the tunnel. Builders of the Holland Tunnel used a shield that enveloped the work site as the excavation progressed; this also avoided obstruction of shipping traffic during construction.

YearAdded:
1982
Image Credit: Courtesy Flickr/Chris Leung (CC BY-SA 2.0)Image Caption: Holland TunnelEra_date_from: 1927
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