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
BAYOU Louisiana Fair 1950 76 1,824
CYPRESS BAYOU Louisiana Fair 1950 76 1,824
CANEY CREEK Louisiana Fair 1950 76 1,495
EAST BRANCH Louisiana Fair 1950 76 1,495
CREEK Louisiana Poor 1950 76 3,057
KCS MOPAC & PAC RRS Louisiana Poor 1950 76 22,308
CHATMAN BAYOU RELIEF Louisiana Fair 1950 76 1,770
CHATMAN BAYOU Louisiana Fair 1950 76 1,770
SIPHORIEN BAYOU Louisiana Fair 1950 76 4,308
DRAIN Louisiana Fair 1950 76 4,308
MORGAN CREEK Louisiana Fair 1950 76 2,544
BRUSHY CREEK Louisiana Poor 1950 76 6,469
TENSAS RIVER Louisiana Poor 1950 76 187
CREEK Louisiana Good 1950 76 4,706
CREEK Louisiana Fair 1950 76 4,706
SHILD CREEK Louisiana Fair 1950 76 4,706
WILLIAMSON CREEK Louisiana Fair 1950 76 4,706
LITTLE BONNE IDEE BAYOU Louisiana Fair 1950 76 1,954
BAYOU GALION Louisiana Fair 1950 76 1,954
HURRICANE BAYOU Louisiana Fair 1950 76 1,467
LYNN CREEK Louisiana Fair 1950 76 886
CREEK Louisiana Fair 1950 76 886
LION CREEK Louisiana Poor 1950 76 464
BEAVER CREEK Louisiana Fair 1950 76 3,242
WEST FORK CANEY CREEK Louisiana Poor 1950 76 49
BRUSHY CREEK Louisiana Fair 1950 76 2,585
BAYOU DULAC Louisiana Fair 1950 76 3,936
DIVERSION CANAL Louisiana Fair 1950 76 1,830
BAYOU ROUGE Louisiana Poor 1950 76 80
CHOCTAW BAYOU Louisiana Poor 1950 76 90
BAYOU RIGOLETTE Louisiana Fair 1950 76 2,063
CREEK Louisiana Fair 1950 76 2,063
BAYOU RIGOLETTE Louisiana Poor 1950 76 2,063
BAYOU RIGOLETTE Louisiana Poor 1950 76 1,931
WINN CREEK Louisiana Fair 1950 76 1,715
BAYOU POISSON Louisiana Fair 1950 76 18,361
DIVERSION CANAL Louisiana Fair 1950 76 2,324
BAYOU LAMOURIE Louisiana Poor 1950 76 1,009
EDMONSON CREEK Louisiana Fair 1950 76 5,277
DITCH Louisiana Good 1950 76 6,363
SAN JOSE CREEK Louisiana Poor 1950 76 6,363
CREEK Louisiana Fair 1950 76 1,587
BAYOU SAN MIGUEL Louisiana Poor 1950 76 1,587
FORKER CREEK Louisiana Poor 1950 76 1,229
SIX MILE CREEK Louisiana Poor 1950 76 240
ASH SLOUGH CANAL Louisiana Fair 1950 76 1,701
MILL CREEK Louisiana Fair 1950 76 3,888
LITTLE CHICKASAW Louisiana Good 1950 76 3,888
TARVER CREEK Louisiana Fair 1950 76 3,888
CREEK Louisiana Fair 1950 76 3,888

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.