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The Aqueduct Bridge, also called the Alexandria Aqueduct, was a bridge that carried traffic between Georgetown, Washington, D.C., and Rosslyn, Virginia, from 1843 to 1923. It was built to transport cargo-carrying boats on the Chesapeake and Ohio Canal in Georgetown across the Potomac River to the Alexandria Canal .
Bosher's Dam is a historic low head dam (also called a weir) built upon the James River just west of Richmond, Virginia.It is a 12-foot-high stone structure which interrupts the natural flow of Virginia's largest self-contained river by spanning the waterway between suburban Tuckahoe in Henrico County and the western part of Richmond just west of the Edward E. Willey Bridge.
A resolution passed by the Planning Commission called the project one of the crowning achievements of Potterfield's career. [8] The bridge was reopened on December 2, 2016, after a $11.3 million renovation that began in October 2015. The wheelchair accessible bridge is open to pedestrians and cyclists 24 hours a day. [3]
Smith Mountain Dam is a concrete arch dam located on the Roanoke River in Virginia, creating Smith Mountain Lake. The dam was built by Appalachian Power (a division of American Electric Power ) between 1960 and 1963 for the purposes of pumped-storage hydroelectricity .
The clearance for recreational boats used to be 12 feet (3.7 m) when the bridge was in the closed position. Vehicles on the highway were also limited by a 13'11" clearance restriction. The bridge was built on wood pilings and became increasingly troublesome mechanically and expensive to maintain as it aged.
The Norris Bridge is 11,237 feet (3,425 m) long, [1] and provides a Mean High Water clearance of 110 feet (34 m) under the center span with a channel depth of over 60 feet (18 m). The bridge is maintained by the Virginia Department of Transportation. When first opened, the bridge was crossed by just over 1,000 vehicles per day, on average.
Remains of the Band-e Kaisar dam, built by the Romans in the 3rd century AD. In Iran, bridge dams such as the Band-e Kaisar were used to provide hydropower through water wheels, which often powered water-raising mechanisms. One of the first was the Roman-built dam bridge in Dezful, [24] which could raise water 50 cubits (c. 23 m
The dam was built in 53 sections called monoliths. A grouting tunnel or gallery was built in order to fill gaps between the dam and foundation with concrete. The spillway consists of 22-tainter gates for overflow and at the base of the dam, 6-sluice gates were installed to maintain downstream flows. Construction was completed and the dam was ...