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St. Tammany Parish

Bayou Bonfouca Bridge [Map · Street View]
Concrete tee beam bridge over Bayou Bonfouca on US-190
Open to traffic
Built 1933

Bayou Bonfouca LA 433 Bridge [Map · Street View]
Swing bridge over Bayou Bonfouca on LA 433
Open to traffic
Built 1976

Bayou Castine Bridge [Map · Street View]
Concrete tee beam bridge over Bayou Castine on US-190
Open to traffic
Built 1932

Bayou Lacombe US 190 Bridge [Map · Street View]
Swing bridge over Bayou Lacombe on US 190 in Lacombe
Open to traffic
Built 1938

Bayou Liberty Bridge [Map · Street View]
Concrete tee beam bridge over Bayou Liberty on US-190
Open to traffic
Built 1933

Bayou Liberty LA 433 Bridge [Map · Street View]
Swing bridge over Bayou Liberty on LA 433
Replaced by new bridge
Built 1981; replaced 2010

Big Branch Bridge [Map · Street View]
Concrete tee beam bridge over Big Branch on US-190
Open to traffic
Built 1932

Bogue Chitto River IC Bridge [Map]
Abandoned through truss bridge over Bogue Chitto River on Illinois Central Railroad
Derelict/abandoned

Bogue Falaya River Bridge [Map]
Lost Steel stringer bridge over Bogue Falaya River on US-190B, LA-21
Replaced by a new bridge
Built 1930

Cane Bayou Bridge [Map · Street View]
Concrete tee beam bridge over Cane Bayou on US 190
Open to traffic
Built 1932

East Middle Pearl River US 90 Bridge [Map · Street View]
Pony truss bridge over East Middle Pearl River on US 90
Open to traffic
Built 1933

East Pearl River Bridge [Map]
Girder bridge over East Pearl River on I-10
Open to traffic
Built 1970

East Pearl River US 90 Bridge [Map · Street View]
Swing bridge over East Pearl River on US 90
Open to traffic
Built 1933 by the Wisconsin Bridge & Iron Co.

ICG LA-21 Underpass [Map]
Lost Steel stringer bridge over Former Illinois Central Gulf Railroad on LA-21
Railroad line closed and removed; bridge demolished and replaced with blacktop
Built 1933

ICG LA36 Underpass [Map · Street View]
Steel stringer bridge over Former Illinois Central Gulf Railroad on LA-36
Open to traffic
Built 1937

Lacombe Bayou Bridge [Map]
Bridge over Lacombe Bayou on Tammany Trace Bike Trail (formerly Illinois Central Railroad)
Open to pedestrians and cyclists only

Lake Pontchartrain Causeway [Map · Street View]
Pair of prestressed concrete bridges over Lake Pontchartrain with a length of nearly 24 miles
Open to two lanes of toll southbound traffic and two lanes of free northbound traffic
First bridge built 1956

Lake Road Bridge [Map · Street View]
Steel stringer bridge over Powell Canal on Lake Road
Open to traffic
Built ca. 1960

Maestri Bridge [Map · Street View]
Bascule bridge over Lake Pontchartrain on US 11 in New Orleans
Open to traffic
Built 1928

Middle Middle Pearl River US 90 Bridge [Map · Street View]
Pony truss bridge over Middle Middle Pearl River on US 90
Open to traffic
Built 1933

New Orleans and Northeastern RR Bridge [Map · Street View]
Steel stringer bridge over New Orleans and Northeastern RR (now Norfolk Southern RR) on US 11
Open to traffic
Built 1937

Norfolk Southern Pearl River Bridge [Map · Street View]
Through truss bridge over Pearl River on Norfolk Southern Railway
Open to traffic

Norfolk Southern Railway Lake Pontchartrain Trestle [Map]
Bridge over Lake Pontchartrain on Norfolk Southern Railway (former Southern Railway)
Open to traffic
Arguably the longest railroad bridge in the United States

Norfolk Southern West Pearl Swing Bridge [Map · Street View]
Railroad swing bridge over Pearl River, West Fork navigation channel on Norfolk Southern Railroad
Open to traffic

Old US 11 East Pearl River Bridge [Map]
Lost Bridge over Pearl River on Old US 11
Demolished in the 1970s
Built 1920s, Made obosolete by the rerouting of US 11 to Interstate 59

Old US 11 West Pearl River Bridge [Map · Street View]
Lost Bridge over Pearl River on US 11
Removed
Demolished at some point after the creation of Interstate 59

Rigolets Bridge [Map · Street View]
Lost through truss swing bridge over Rigolets Pass on US 90 in New Orleans
Replaced by new bridge
Opened to traffic June 9, 1930; replaced 2009

Rigolets Pass Bridge [Map]
Truss bridge over Rigolets Pass on CSX Railroad
Open to traffic

Slough Bridge [Map · Street View]
Slab bridge over Slough on US-190
Open to traffic
Built 1941

Tchefuncte River Bridge [Map · Street View]
Steel stringer bridge over Tchefuncte River on LA-21
Open to traffic
Built 1950

Tchefuncte River LA 22 Bridge [Map · Street View]
Swing bridge over Tchefuncte River on LA 22 at Madisonville
Open to traffic
Built ca. 1980

Tchefuncte River Railroad Bridge [Map · Street View]
Abandoned truss bridge over Tchefuncte River on Illinois Central Railroad
Derelict/abandoned

West Middle River US 90 Bridge [Map · Street View]
Pony truss bridge over West Middle River on US 90
Open to traffic
Built 1933

West Pearl River Bridge [Map · Street View]
Pair of steel stringer bridges over West Pearl River on I-10
Open to traffic
Built 1970

West Pearl River US 90 Bridge [Map · Street View]
Vertical lift bridge over West Pearl River on US 90
Open to traffic
Built 1933