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Lock and Dam No. 18 is a lock and dam located near Gladstone, Illinois and Burlington, Iowa on the Upper Mississippi River around river mile 410.5. The movable dam is 1,350 feet (411.5 m) and consists of 3 roller gates and 14 tainter gates. The lock is 110 feet (33.5 m) wide by 600 feet (182.9 m) long.
The powerhouse was also the home of the waste gate controls. The lock and gates were designed to manage a 40-foot (12 m) drop in canal elevation between the two municipalities. [3] A second phase of construction occurred from 1922 to 1933 to handle differing water loads following the opening of the Ohio River Standard Navigation Lock.
According to the US Army Corps of Engineers, the new dam and locks will reduce passage time to under one hour with the new system. [citation needed] Due to queuing at Lock and Dam Number 52 and Lock and Dam Number 53, it can take cargo traffic 15 to 20 hours each to transit the locks the Olmsted complex is intended to replace. [6]
The main lock is 1,200 feet (370 m) long and 110 feet (34 m) wide; the auxiliary is 600 feet (180 m) long and 110 feet (34 m) wide. The main lock has a vertical lift gate and a miter gate while the aux. lock has two miter gates. The dam is 1,160 feet (350 m) long with 9 tainter gates, each 110 feet (34 m) wide by 42 feet (13 m) high.
The lock at the complex is 110 by 600 feet (34 by 183 m) and has four Miter gates, with a 34-foot (10.3 meter) drop. The dam is 2,372 feet (723 m) long and includes concrete and earthen segments. The complex also includes a disused junction lock for the Illinois and Michigan Canal, the control station for the lock, and a modern pump house. [2]
The confrontation and the arrest, posted to the television network's YouTube channel, quickly went viral, amassing over 238,000 views and more than 1,400 comments on the platform since Monday.
The lock chamber is 600 feet (180 m) long, 80 feet (24 m) wide, and 22 feet (6.7 m) deep and can accommodate up to 100 vessels at once. It contains two pair of 30 feet (9.1 m) tall sector gates. [4] The lock requires 12–15 minutes to cycle through a typical water-level difference of two to five feet (0.61 to 1.52 m). [2]
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