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
WEST PEARL RIVER Louisiana Poor 1933 93 1,215
WEST MIDDLE RIVER Louisiana Poor 1933 93 1,215
MIDDLE MIDDLE PEARL RIVE Louisiana Poor 1933 93 1,215
E MIDDLE PEARL RIVER Louisiana Poor 1933 93 1,215
SLOUGH Louisiana Fair 1933 93 11,418
CREEK Louisiana Fair 1933 93 11,418
CREEK Louisiana Fair 1933 93 11,418
CREEK Louisiana Fair 1933 93 10,183
CREEK Louisiana Fair 1933 93 9,408
CREEK Louisiana Fair 1933 93 9,408
LITTLE BAYOU Louisiana Fair 1933 93 11,718
CREEK Louisiana Fair 1933 93 11,718
BAYOU LIBERTY Louisiana Fair 1933 93 16,944
BAYOU BONFOUCA Louisiana Fair 1933 93 16,944
DRAIN Louisiana Fair 1933 93 16,944
CREEK Louisiana Good 1933 93 7,775
ABITA CREEK Louisiana Good 1933 93 7,775
BAYOU QUEUE DE TORTUE Louisiana Good 1934 92 9,189
CREEK Louisiana Good 1934 92 9,189
Bayou Queue De Tortue Louisiana Fair 1934 92 7,042
CREEK Louisiana Good 1934 92 7,540
RED RIVER @ TEXAS ST. Louisiana Fair 1934 92 11,856
BLACK BAYOU Louisiana Fair 1934 92 5,200
BRUSHY BRANCH Louisiana Fair 1934 92 3,399
COLLINSBURG CREEK Louisiana Fair 1934 92 3,399
DRAIN Louisiana Fair 1934 92 4,262
DRAIN Louisiana Fair 1934 92 4,262
BAYOU Louisiana Fair 1934 92 5,849
CREEK Louisiana Good 1934 92 11,113
BAYOU SAN MIGUEL RELIEF Louisiana Fair 1934 92 1,587
NORTH FORK CREEK Louisiana Fair 1934 92 1,900
CREEK Louisiana Fair 1934 92 1,900
EAST PEARL RIVER Louisiana Poor 1934 92 1,215
BONNET CARRE Louisiana Fair 1935 91 25,051
BAYOU DESALLEMAND Louisiana Fair 1935 91 1,834
BAYOU PETITE PRAIRIE Louisiana Fair 1935 91 2,845
BAYOU TESSON Louisiana Fair 1935 91 500
BAYOU TESSON Louisiana Fair 1935 91 800
LITTLE CYPRESS BAYOU Louisiana Fair 1935 91 3,803
DRAIN Louisiana Fair 1935 91 2,638
DRAIN Louisiana Fair 1935 91 2,238
DRAIN Louisiana Good 1935 91 349
TANYARD CREEK Louisiana Fair 1935 91 4,174
ICG RR @ SIBLEY Louisiana Poor 1935 91 6,469
KCS RR MINDEN Louisiana Poor 1935 91 6,459
MILE CREEK Louisiana Fair 1935 91 158
CREEK Louisiana Fair 1935 91 1,405
BAYOU GALION Louisiana Poor 1935 91 1,405
YOUNGS BAYOU Louisiana Fair 1935 91 17,683
CREEK Louisiana Fair 1935 91 163

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.