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Teotihuacan (/ t eɪ ˌ oʊ t iː w ə ˈ k ɑː n /; [1] Spanish: Teotihuacán, Spanish pronunciation: [teotiwa'kan] ⓘ; modern Nahuatl pronunciation ⓘ) is an ancient Mesoamerican city located in a sub-valley of the Valley of Mexico, which is located in the State of Mexico, 40 kilometers (25 mi) northeast of modern-day Mexico City. [2 ...
The DuSable Bridge (formerly the Michigan Avenue Bridge) is a bascule bridge that carries Michigan Avenue across the main stem of the Chicago River in downtown Chicago, Illinois, United States. The bridge was proposed in the early 20th century as part of a plan to link Grant Park (downtown) and Lincoln Park (uptown) with a grand boulevard ...
When it opened in 1902, on Chicago's north side, it was the first such bridge built in the United States. The bridge was a major advance in American movable bridge engineering, and was the prototype for over 50 additional bridges in Chicago alone. [5] The bridge was designated as an ASCE Civil Engineering Landmark in 1981, and a Chicago ...
Plans were made to reverse the flow of the Chicago River, leading water away from Lake Michigan and carrying Chicago's sewage into the Mississippi River. In the late 1860s, the Illinois and Michigan Canal was dredged and deepened to expand its ability to handle the city's sewage and move it away from the lake, but continued population growth ...
George Washington Bridge, Throgs Neck Bridge, Bronx–Whitestone Bridge, Verrazzano-Narrows Bridge and Bayonne Bridge Othmar Hermann Ammann (March 26, 1879 – September 22, 1965) was a Swiss-American civil engineer whose bridge designs include the George Washington Bridge , Verrazzano-Narrows Bridge , and Bayonne Bridge .
The bridge was dredged and river traffic resumed on September 8, 1853. [4] In 1854, the city approved an expenditure of $12,000 to replace the bridge with a pivot bridge. [5] During the Lager Beer Riot in 1855, the bridge was pivoted to help contain the rioters. [6] On June 26, 1907, the steamer Atlas collided with the south abutment of the ...
Leon Solomon Moisseiff (November 10, 1872 – September 3, 1943) [1] was a leading suspension bridge engineer in the United States in the 1920s and 1930s. He was awarded The Franklin Institute's Louis E. Levy Medal in 1933.
The Chicago Sun-Times, the last railroad customer to the east of the bridge, moved their printing plant out of downtown Chicago in 2000, and the bridge has been unused since. It was designated a Chicago Landmark in 2007. The bridge is lowered once a year and inspected by crew driving a Hi-Rail truck, and is still in "active" status. [2] [3]