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Eighteen of Pittsburgh's large bridges are visible in this aerial photo The bridges of Pittsburgh play an important role in the city's transportation system. Without bridges, the Pittsburgh region would be a series of fragmented valleys, hillsides, river plains, and isolated communities. A 2006 study determined that, at the time, Pittsburgh had 446 bridges, though that number has been disputed ...
At some point, the public supported a "free bridges" movement that supported government buying out the bridge companies and abolishing tolls. Between that and the War department ruling that government-owned bridges would not need to be corrected as quickly, the bridge companies were willing to sell and did so before 1910.
The railway bridge collapsed under a heavy train loaded with more than 500 passengers; more than 70 were killed. Chester rail bridge: Chester, Massachusetts: United States 31 August 1893: Lattice truss bridge: Removed rivets caused bridge to collapse under the weight of a train 14 killed Point Ellice Bridge: Victoria, British Columbia: Canada ...
The bridge collapsed at 1.30am on 26 March after a cargo ship collided with a supporting pier. Six men, all of whom were Latino immigrant workers, ... The deceased were “hard-working, humble men ...
I-35W Mississippi River bridge collapse: Minneapolis, Minnesota, US: Bridge: 13 dead, 145 injured 2007: Collapse of bridge over the Jiantuo River during construction: Hunan, China: Bridge: 50+ dead, ~90+ injured 2007: Collapse of Cần Thơ Bridge: Cần Thơ, Vietnam: Bridge: 52–59+ dead, 140–189+ injured 2007: Estádio Fonte Nova ...
Collapsed barn at Hörsne, Gotland, Sweden Building collapse due to snow weight. Structural integrity and failure is an aspect of engineering that deals with the ability of a structure to support a designed structural load (weight, force, etc.) without breaking and includes the study of past structural failures in order to prevent failures in future designs.
Schematic cross section of a pressurized caisson. In geotechnical engineering, a caisson (/ ˈ k eɪ s ən,-s ɒ n /; borrowed from French caisson 'box', from Italian cassone 'large box', an augmentative of cassa) is a watertight retaining structure [1] used, for example, to work on the foundations of a bridge pier, for the construction of a concrete dam, [2] or for the repair of ships.
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