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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
JEFFERSON CANAL Louisiana Fair 1930 96 12,347
DRAINAGE BAYOU Louisiana Fair 1930 96 270
HALF MOON BAYOU Louisiana Fair 1930 96 270
HANSON CANAL Louisiana Fair 1930 96 6,242
DRAIN Louisiana Fair 1930 96 1,956
DRAIN Louisiana Fair 1930 96 15,627
CLARKE BAYOU Louisiana Poor 1930 96 2,376
CREEK Louisiana Fair 1930 96 1,209
TIGER BRANCH Louisiana Poor 1930 96 1,209
RED BAYOU Louisiana Fair 1930 96 1,209
CANEY CREEK Louisiana Fair 1930 96 5,728
TRIBUTARY TO MILE CREEK Louisiana Fair 1930 96 4,200
MILE CREEK Louisiana Fair 1930 96 4,200
TRIB TO COOLEY BRANCH Louisiana Fair 1930 96 1,041
TRIBUTARY TO MILE CREEK Louisiana Fair 1930 96 400
TRIB TO COOLEY BRANCH Louisiana Fair 1930 96 1,041
CLEAR CREEK Louisiana Fair 1930 96 3,275
CREEK Louisiana Fair 1930 96 2,216
BAYOU Louisiana Fair 1930 96 1,181
BEE BAYOU Louisiana Fair 1930 96 1,451
COW BAYOU Louisiana Fair 1930 96 1,451
CYPRESS BAYOU Louisiana Fair 1930 96 1,451
HURRICANE Louisiana Fair 1930 96 1,451
CREEK Louisiana Fair 1930 96 1,451
DRAIN Louisiana Fair 1930 96 1,451
CREEK Louisiana Fair 1930 96 1,451
LITTLE CREEK Louisiana Fair 1930 96 1,451
DRAIN Louisiana Fair 1930 96 1,451
DRAIN Louisiana Fair 1930 96 1,451
BAYOU COCO Louisiana Poor 1930 96 668
CREEK Louisiana Fair 1930 96 125
MACHIS BAYOU Louisiana Poor 1930 96 665
CREEK Louisiana Good 1930 96 14,420
CREEK Louisiana Good 1930 96 296
STREAM NO NAME Louisiana Fair 1930 96 12,649
STREAM NO NAME Louisiana Poor 1930 96 6,347
CREEK Louisiana Fair 1930 96 134
DRAIN Louisiana Fair 1930 96 15,607
DRAIN Louisiana Fair 1930 96 14,365
DRAIN Louisiana Fair 1930 96 7,499
DRAIN Louisiana Fair 1930 96 7,499
DRAIN CANAL Louisiana Fair 1931 95 3,687
CREEK Louisiana Fair 1931 95 2,899
BAYOU MALLET Louisiana Good 1931 95 4,319
BAYOU FORK Louisiana Fair 1931 95 11,913
BAYOU PLAQUEMINE Louisiana Fair 1931 95 11,913
BAYOU CALAHAN Louisiana Fair 1931 95 20,603
LASALLE COULEE Louisiana Fair 1931 95 14,501
CREEK Louisiana Fair 1931 95 6,242
BAYOU CHOUPIQUE Louisiana Fair 1931 95 6,242

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