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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 ...
Teotihuacan was a large pre-historic city that underwent massive population growth and sustained it over most of the city's occupancy. In 100 CE, the population could be estimated at around 60,000-80,000, after 200 years of the city's occupancy, within 20 km 2 of the city.
Teotihuacan seems to have been the first city known by this name. After the collapse of the Teotihuacan empire, central Mexico broke into smaller states. The Toltec created the first sizable Mexican empire after the fall of Teotihuacan, and their capital was referred to by the same name as a reference to the earlier greatness of Teotihuacan.
Teotihuacan's influence over the Maya civilization cannot be overstated: it transformed political power, artistic depictions, and the nature of economics. Within the city of Teotihuacan was a diverse and cosmopolitan population. Most of the regional ethnicities of Mexico were represented in the city, such as Zapotecs from the Oaxaca region ...
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 .
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 ...
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 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 ...