Quincy, Illinois
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24th Street Bridge (Adams County, Illinois)
Built 1936Concrete bridge over Cedar Creek on IL 96 (24th Street) in QuincyDemolished
BNSF - Cedar Street Overpass (Adams County, Illinois)
Built 1928 Using Older SubstructuresSlab bridge over Cedar Street on BNSF RailwayOpen to traffic
BNSF - Quincy Bay Bridge (Adams County, Illinois)
Built 1960Deck Plate girder bridge over Quincy Bay on the BNSF Railway in QuincyOpen to railroad traffic
CBQ - Lower Quincy Bay Bridge (Adams County, Illinois)
Built 1889; Removed 1960-1Lost Pratt deck truss swing bridge over Quincy Bay on Chicago, Burlington & Quincy RailroadRemoved; One pier used as foundation for the "Pier Restaurant"
CBQ - Quincy Bay Bridge (1868) (Adams County, Illinois)
Built 1868; Approached replaced by DPGs 1886; Replaced 1899Lost Bollman deck truss bridge over Quincy Bay on Chicago, Burlington & QuincyReplaced by a new bridge
CBQ - Quincy Railroad Bridge (1866) (Adams County, Illinois)
Built 1866; Replaced 1898Lost Whipple through truss bridge over Mississippi River on Chicago, Burlington & Quincy RailroadReplaced by a new bridge
CBQ - Quincy Railroad Bridge (1899) (Adams County, Illinois)
Built 1899; Wagon decks removed 1930; Replaced 1961Warren through truss swing bridge over Mississippi River on Chicago, Burlington & Quincy & Highway (Until 1930)Replaced by a new bridge
Cedar Creek Bridge (Adams County, Illinois)
Built 1875Lost Through truss bridge over Cedar CreekNo longer exists
Curtis Creek Bridge (Adams County, Illinois)
Built 1899; rehabilitated 1995Stone arch bridge over Curtis Creek on South 8th Street in QuincyOpen to two-lane traffic
Quincy Bayview Bridge (Adams County, Illinois)
Built 1986 at a cost of $17,230,000Cable-stayed bridge over the Mississippi River on westbound US 24 at QuincyOpen to two lanes of westbound traffic
Quincy Memorial Bridge (Adams County, Illinois)
Built 1928-1930; rehabilitated 1981Continuous through truss bridge over the Mississippi River on eastbound US 24 at QuincyOpen to two lanes of eastbound traffic
Quinsippi Island Bridge (1899) (Adams County, Illinois)
Built 1899 using 1867 Arches; Replaced on a new alignment 1961; Used by Narrow Gauge tourist trains until 1984, Coverted to road used after 1984; Repaired 2015-16Plate girder swing bridge over Quincy Bay providing access to Quinsippi Island Park in QuincyOpen