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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
CREEK Louisiana Fair 1931 95 609
CREEK Louisiana Fair 1931 95 2,671
CREEK Louisiana Fair 1931 95 2,671
CREEK Louisiana Fair 1931 95 6,218
HORSE.PEN CREEK Louisiana Fair 1931 95 6,236
CREEK Louisiana Poor 1931 95 6,236
CREEK Louisiana Fair 1931 95 6,258
CREEK Louisiana Fair 1931 95 3,263
DRAIN Louisiana Fair 1931 95 11,886
DRAIN Louisiana Fair 1931 95 11,886
DRAIN Louisiana Fair 1931 95 11,886
DRAIN Louisiana Fair 1931 95 11,886
DRAIN Louisiana Fair 1931 95 11,886
DRAIN Louisiana Fair 1931 95 11,113
CREEK Louisiana Fair 1931 95 4,041
CREEK Louisiana Fair 1931 95 4,041
CREEK Louisiana Good 1931 95 8,463
CANAL Louisiana Fair 1931 95 14,902
DRAIN Louisiana Fair 1931 95 1,391
DRAIN Louisiana Fair 1931 95 1,001
DRAINAGE DITCH Louisiana Fair 1931 95 6,559
COULEE DES GRUE Louisiana Fair 1931 95 18,571
BAYOU GRAPPE Louisiana Fair 1931 95 1,977
ELEM BRANCH Louisiana Poor 1931 95 14
JESSE BRANCH Louisiana Poor 1931 95 14
BOEUF BAYOU Louisiana Fair 1931 95 3,281
CREEK Louisiana Fair 1931 95 5,615
CREEK Louisiana Fair 1931 95 5,615
WATERS CREEK Louisiana Fair 1931 95 5,615
CASTOR RELIEF Louisiana Poor 1931 95 306
CASTOR RELIEF Louisiana Poor 1931 95 306
DRAIN Louisiana Poor 1931 95 306
CASTOR RELIEF Louisiana Poor 1931 95 306
BAYOU MANCHAC Louisiana Poor 1931 95 9,615
PONCHATOULA CREEK Louisiana Fair 1931 95 21,457
CREEK Louisiana Good 1932 94 5,359
DRAIN Louisiana Fair 1932 94 1,756
BAYOU Louisiana Fair 1932 94 8,492
BAYOU Louisiana Fair 1932 94 6,040
PLAQUEMINE BRULE Louisiana Fair 1932 94 7,630
RAMOS BAYOU Louisiana Poor 1932 94 7,504
BAYOU GRAND CANE Louisiana Fair 1932 94 6,256
S. FORK OF BRUSHY BAYOU Louisiana Fair 1932 94 9,866
BRUSHY BAYOU Louisiana Fair 1932 94 9,866
CREEK Louisiana Good 1932 94 9,942
CREEK Louisiana Fair 1932 94 9,942
DRAIN Louisiana Good 1932 94 9,942
COOLEY BR RELIEF Louisiana Fair 1932 94 9,942
COOLEY BRANCH Louisiana Good 1932 94 9,942
CREEK Louisiana Good 1932 94 9,942

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