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The bridge's name comes from a large shoal, or rocky rapids, called the Chain of Rocks, which made that stretch of the Mississippi extremely dangerous to navigate. [4] Because of a low-water dam built by the Army Corps of Engineers in the 1960s, little of the Chain of Rocks is visible today except during extreme low water conditions. [5]
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 ...
The new terminal would eventually cost $33 million ($391 million present day dollars) and was built entirely by Pittsburgh-area companies. The new airport, christened as Greater Pittsburgh Airport (renamed Greater Pittsburgh International Airport in 1972 upon the opening of the International Arrivals Building) opened on 31 May 1952.
Name Image Built Listed Location County Type Bridge in Athens Township: 1913 June 22, 1988 removed August 22, 2012: Athens: Bradford: Pennsylvania (petit) truss Highway Bridges Owned by the Commonwealth of Pennsylvania, Department of Transportation TR
The first segment of the highway between PA 60 (now I-376) and Pittsburgh International Airport in Findlay Township and US 22 in Robinson Township opened to traffic on October 11, 2006. The second segment of the highway between US 22 and I-79 in Cecil Township near the National Cemetery of the Alleghenies opened to traffic on October 15, 2021.
Beginning in 1870, the city of Pittsburgh, Pennsylvania built numerous inclined railways to provide passenger service to workers traveling the steep hills to their homes; there were 17 built in the late 19th century. Following road building and greater use of private automobiles, the inclines business declined and most were closed and removed.
Fort Pitt Bridge with Downtown Pittsburgh in the background. A large metropolitan area that is surrounded by rivers and hills, Pittsburgh has an infrastructure system that has been built out over the years to include roads, tunnels, bridges, railroads, inclines, bike paths, and stairways; however, the hills and rivers still form many barriers to transportation within the city.
MacArthur Bridge (St. Louis) Martin Luther King Bridge (St. Louis) McKinley Bridge; N. New Chain of Rocks Bridge; O. Old Trails Bridge; P. Poplar Street Bridge; Q.