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.
| 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.