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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
JUDD BAYOU Louisiana Fair 1908 118 —
INNER HARBOR NAVIGATION Louisiana Poor 1919 107 —
MARTEAU BAYOU Louisiana Poor 1919 107 40
DRAIN Louisiana Good 1920 106 4,992
CHOCTAW BAYOU Louisiana Fair 1921 105 100
YOUNGS BAYOU Louisiana Fair 1922 104 8,579
STREAM Louisiana Fair 1923 103 4,376
BAYOU MORRIS Louisiana Poor 1923 103 15
BAYOU POYDRAS Louisiana Good 1923 103 1,351
DRAINAGE CANAL Louisiana Good 1923 103 1,204
CITY PARK LAGOON Louisiana Fair 1924 102 —
TIGER BRANCH Louisiana Fair 1924 102 962
CREEK Louisiana Fair 1924 102 422
CREEK Louisiana Fair 1924 102 2,238
CREEK Louisiana Fair 1924 102 2,370
COLEMAN BAYOU Louisiana Fair 1924 102 3,570
CREEK Louisiana Fair 1924 102 525
CREEK Louisiana Fair 1924 102 5,107
CREEK Louisiana Fair 1925 101 890
SHERMAN CREEK Louisiana Fair 1925 101 9,002
COOLEY BR RELIEF Louisiana Fair 1925 101 9,002
COOLEY BRANCH Louisiana Fair 1925 101 9,002
CREEK Louisiana Fair 1925 101 422
CREEK Louisiana Good 1926 100 23,405
AT JONES Louisiana Fair 1926 100 1,405
CREEK Louisiana Good 1926 100 1,405
GUYTON CREEK Louisiana Fair 1926 100 1,350
CREEK Louisiana Fair 1926 100 597
CREEK Louisiana Poor 1926 100 525
STREAM NO NAME Louisiana Good 1926 100 21,189
DRAIN Louisiana Poor 1927 99 890
DRAIN Louisiana Fair 1927 99 15,627
KCS RR Louisiana Poor 1927 99 11,856
BRANCH Louisiana Fair 1927 99 467
BRUSHY BRANCH Louisiana Fair 1927 99 2,151
DRAIN Louisiana Fair 1927 99 2,151
BEARD BRANCH Louisiana Fair 1928 98 457
DRAINAGE CANAL Louisiana Fair 1928 98 6,422
FARMERS L & C CO. CANAL Louisiana Fair 1928 98 112
DRAINAGE CANAL Louisiana Poor 1928 98 3,974
DRAINAGE CANAL Louisiana Fair 1928 98 3,268
GAMM RD EXT. DOOLEY BAYO Louisiana Fair 1929 97 98
BURNEY BRANCH Louisiana Fair 1929 97 2,368
CREEK Louisiana Poor 1929 97 525
CREEK Louisiana Poor 1929 97 525
DUGDEMONA RIVER Louisiana Poor 1929 97 4,317
PINEY WOODS CREEK Louisiana Fair 1929 97 1,348
POPE CREEK Louisiana Fair 1929 97 1,348
CHEF MENTEUR PASS Louisiana Poor 1930 96 1,215
SANDAGER CANAL Louisiana Poor 1930 96 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