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Historic Bridges in Louisiana

614 bridges built before 1951 in Louisiana still in service today.

Bridges Built Before 1951

The United States has 614 bridges in Louisiana built before 1951 that remain in active service. These structures are 75+ years old — many predate modern engineering codes and were not designed for today's traffic volumes and vehicle weights. The average design life of a bridge is 50 years, making these aging structures a significant infrastructure concern.

Clear
Bridge State Condition Year Built Age (Years) ADT
LAKE PONTCHARTRAIN Louisiana Poor 1938 88 3,912
CITY PARK LAGOON Louisiana Fair 1938 88 —
HOUMA CANAL Louisiana Poor 1938 88 119
VERMILION R/ABBEVILLE Louisiana Fair 1938 88 7,662
BOGGY BRANCH Louisiana Fair 1938 88 5,474
CREEK Louisiana Fair 1938 88 5,474
DRAIN Louisiana Fair 1938 88 2,198
DRAIN Louisiana Fair 1938 88 2,198
CANEY BAYOU Louisiana Fair 1938 88 2,198
MUDDY BAYOU Louisiana Fair 1938 88 2,198
CREEK Louisiana Fair 1938 88 242
CREEK Louisiana Fair 1938 88 4,041
CREEK Louisiana Fair 1938 88 3,530
SABINE RIVER Louisiana Poor 1938 88 3,365
INDIAN CREEK Louisiana Poor 1938 88 88
BIG BEAR CREEK Louisiana Poor 1938 88 88
K.C.S. RR Louisiana Fair 1938 88 9,017
BAYOU LACOMBE Louisiana Fair 1938 88 9,941
SELSERS CREEK Louisiana Fair 1938 88 12,900
DRAIN Louisiana Fair 1938 88 12,900
CREEK Louisiana Fair 1938 88 12,900
DRAIN Louisiana Fair 1938 88 6,775
BEDICO CREEK Louisiana Fair 1938 88 6,775
METAIRIE RELIEF CANAL Louisiana Fair 1939 87 31,223
METAIRIE RELIEF CANAL Louisiana Fair 1939 87 28,615
CITY PARK LAGOON Louisiana Fair 1939 87 —
CITY PARK LAGOON Louisiana Fair 1939 87 —
CITY PARK LAGOON Louisiana Fair 1939 87 —
CITY PARK LAGOON Louisiana Good 1939 87 —
CITY PARK LAGOON Louisiana Good 1939 87 —
CITY PARK LAGOON Louisiana Fair 1939 87 —
CITY PARK LAGOON Louisiana Fair 1939 87 —
CITY PARK LAGOON Louisiana Fair 1939 87 —
DRAIN Louisiana Good 1939 87 1,664
BAYOU Louisiana Fair 1939 87 1,397
LITTLE B GALION Louisiana Fair 1939 87 1,405
CREEK Louisiana Poor 1939 87 1,405
MP RAILROAD Louisiana Poor 1939 87 1,405
CREEK Louisiana Fair 1939 87 1,405
INDIAN CREEK Louisiana Fair 1939 87 1,898
INDIAN CREEK RELIEF Louisiana Fair 1939 87 1,898
CROSS BAYOU Louisiana Fair 1939 87 1,898
BEAR CREEK Louisiana Fair 1939 87 1,898
Cainey Bayou Louisiana Fair 1939 87 1,042
CREEK Louisiana Good 1939 87 199
MISSISSIPPI RIVER Louisiana Poor 1939 87 18,380
DRAIN Louisiana Fair 1939 87 6,435
DRAIN Louisiana Fair 1939 87 6,435
TANGIPAHOA RIVER Louisiana Poor 1939 87 6,435
DRAIN Louisiana Fair 1939 87 1,306

About Historic Bridge Data

Bridges built before 1951 are classified as historic in this database. Many were designed to 1940s standards with lower load limits and narrower lanes. While FHWA requires regular inspections of all bridges regardless of age, older structures often require more frequent monitoring and rehabilitation investment.

All Bridges Poor Condition Scour Critical Bridge Stats