Chicago Transit Authority
Reporting mark: CTA
View Exhibit mapThe Chicago Transit Authority operates rapid transit trains throughout Chicago and several neighboring suburbs. The correct name of the system is 'L' (Capital L surrounded by single quotation marks).
This category also includes bridges used by streetcar lines operated by CTA and predecessor lines.
For more information about the system as a whole, see entry http://bridgehunter.com/il/cook/bh65895/
95th Street Bridge (1902) (Cook County, Illinois)
Built 1902; Replaced 1958Lost bascule truss bridge over Calumet River on 95th StreetReplaced by a new bridge
Cortland Street Bridge (Cook County, Illinois)
Built 1901-02Double-leaf bascule bridge over North Branch Chicago River on W. Cortland Street in ChicagoOpen to traffic
CRT/BRC Overpass (Cook County, Illinois)
Built 1895 for Metropolitan-West Side Elevated Railroad, removed c1958Lost Through truss bridge over Belt Railway of Chicago on Metropolitan West Side Elevated RailroadRemoved but not replaced
CRT/CTA Lake Street Transfer (Cook County, Illinois)
Built 1895; Route abandoned and likley removed 1964Lost Pony plate girder bridge over Chicago Transit Authority on Chicago Rapid TransitRemoved
CSL - Central Station Bridge (Cook County, Illinois)
Built 1933; Removed 1974Lost Steel stringer bridge over Illinois Central Railroad on Chicago Surface LinesRemoved
CTA - "Polly "L"" Bridge (Cook County, Illinois)
Built 1898 for Metropolitan West Side Elevated; route abandoned 1964Camelback through truss bridge over UP RR (formerly C&NW RR) on an Abandoned Metropolitan West Side Elevated Railroad lineAbandoned
CTA - Chicago 'L' (Cook County, Illinois)
Built in stages 1892 to 2021. CTA created October 1, 1947 by combining all previous rapid transit lines.Viaduct and tunnel system across entire City of Chicago on Chicago Transit AuthorityOpen to traffic
CTA Green Line/IC Overpass (Cook County, Illinois)
Opened April 23, 1892; Closed March 4, 1982; Removed 1984Lost Pennsylvania through truss bridge over Illinois Central Railroad on Chicago Transit Authority Green LineRemoved
CTA Pink Line/BOCT Overpass (Cook County, Illinois)
Replaced with a TPG ca. 1981Lost Camelback through truss bridge over Baltimore & Ohio Chicago Terminal on Chicago Transit Authority Pink LineReplaced by a new bridge
CTA Red/Green Lines - Dan Ryan Double Bridge (Cook County, Illinois)
Original 'L' line built 1905. Bridge built 1961 as part of construction of Dan Ryan ExpresswaySteel stringer bridge over I/90-94, CTA Red Line 'L' on CTA Green Line 'L'Open to traffic
CTA Stockyards Line/CWI Overpass (Cook County, Illinois)
Built 1907; Removed 1957Lost Through truss bridge over Chicago & Western Indiana Railroad on Chicagoo Transit AuthorityRemoved
Halsted Street Bridge (Cook County, Illinois)
Built 1934; rehabilitated 1988Bascule bridge over South Branch Chicago River on Halsted Street in ChicagoOpen to traffic
Halsted Street Lift Bridge (Cook County, Illinois)
Built 1894Lost Pratt through truss bridge over South Branch Chicago River on Halsted StreetReplaced by a new bridge
Halsted Street Overpass (Cook County, Illinois)
Replaced 1971Lost Pratt through truss bridge over Chicago, Milwaukee, St. Paul & Pacific Railroad on Halsted StreetReplaced by a new bridge
Indiana Avenue Bridge (Old) (Cook County, Illinois)
Built 1914; Replaced 1977Lost Double-intersection Warren through truss bridge over Little Calumet River on Indiana AvenueReplaced by a new bridge
Lake Street Bridge (Cook County, Illinois)
Built 1916Bascule bridge over South Branch Chicago River on Lake Street and CTA Green/Pink Lines in ChicagoOpen to traffic
Milwaukee Avenue Viaduct (Cook County, Illinois)
Lost Warren through truss bridge over Chicago, Milwaukee, St. Paul & Pacific Railroad on Milwaukee AvenueRemoved
O'Hare Aircraft Overpass (Cook County, Illinois)
Built 1967; second bridge built 1987Pair of bridges over I-190, CTA Blue Line, Airport Transit System on O'Hare International Airport TaxiwaysOpen to airplane traffic
Red Line - Ainslie Street Bridge (Cook County, Illinois)
Built 1922, Currently being replacedSlab bridge over Ainslie Street on CTA Red LineOpen to traffic, Partially Demolished
Red Line - Winona Street Bridge (Cook County, Illinois)
Built 1922, Replacement in ProgressSlab bridge over Winona Street on CTA Red LineOpen to traffic, Partially Demolished
UP - I-290 Bridge (Cook County, Illinois)
Built 1898, I-290 Spans added 1952Deck plate girder bridge over I-290, CTA Blue Line and Congress Parkway on Union Pacific RailroadOpen to traffic
Wells Street Bridge (Cook County, Illinois)
Built 1922, rehabilitated 2013Double-leaf bascule bridge over Main Branch Chicago River on N. Wells Street and CTA 'L' in ChicagoOpen