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
CONTRABAND BAYOU Louisiana Fair 1935 91 16,472
DRAIN Louisiana Fair 1935 91 5,020
CYPRESS CREEK Louisiana Fair 1935 91 61
CREEK Louisiana Fair 1935 91 130
MCMANOR CANAL Louisiana Fair 1935 91 7,858
BAYOU WHITE VINE Louisiana Fair 1935 91 4,369
DRAIN Louisiana Fair 1935 91 9,784
BLACK RIVER Louisiana Fair 1935 91 9,784
BEAVER CREEK Louisiana Fair 1935 91 2,266
COOL CREEK Louisiana Good 1935 91 2,403
TERRYS CREEK Louisiana Fair 1935 91 2,403
MISSISSIPPI RIVER Louisiana Fair 1936 90 55,210
BAYOU LAFOURCHE Louisiana Fair 1936 90 5,783
BAYOU CARRON Louisiana Fair 1936 90 2,508
BAYOU COURTABLEAU Louisiana Fair 1936 90 1,533
Bayou Tesson Louisiana Fair 1936 90 1,500
Bayou Tesson Louisiana Fair 1936 90 800
ALLIGATOR BAYOU Louisiana Poor 1936 90 2,376
CREEK Louisiana Good 1936 90 3,924
CREEK Louisiana Fair 1936 90 3,924
SAND BEACH BAYOU Louisiana Fair 1936 90 27,829
CREEK Louisiana Fair 1936 90 5,728
CREEK Louisiana Fair 1936 90 1,770
B BONNE IDEE Louisiana Fair 1936 90 1,405
CREEK Louisiana Fair 1936 90 1,405
OUACHITA RIVER-LOUISVILL Louisiana Fair 1936 90 17,683
CREEK Louisiana Fair 1936 90 464
CREEK Louisiana Poor 1936 90 464
DRAIN Louisiana Fair 1936 90 10,589
DITCH Louisiana Fair 1936 90 2,835
DITCH Louisiana Fair 1936 90 2,835
CANE RIVER Louisiana Poor 1936 90 11,003
CANE RIVER Louisiana Poor 1936 90 6,362
CREEK Louisiana Fair 1936 90 468
BAYOU FISHER Louisiana Fair 1936 90 3,698
DRAIN Louisiana Fair 1936 90 100
BAYOU COURTABLEAU Louisiana Fair 1937 89 2,097
ICG RR Louisiana Poor 1937 89 5,484
RED BAYOU Louisiana Fair 1937 89 22
CREEK Louisiana Fair 1937 89 5,474
BRUSHY BAYOU Louisiana Fair 1937 89 5,065
CREEK Louisiana Fair 1937 89 15,958
CREEK Louisiana Fair 1937 89 5,013
CREEK Louisiana Fair 1937 89 5,862
DRAINAGE CANAL Louisiana Poor 1937 89 8,548
DRAINAGE CANAL Louisiana Fair 1937 89 8,548
DRAIN Louisiana Poor 1937 89 4,912
SABINE RIVER @ BURR FERR Louisiana Fair 1937 89 1,229
NO&NE RAILROAD Louisiana Poor 1937 89 15,607
ICG RAILROAD Louisiana Fair 1937 89 2,206

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.