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 |
|---|---|---|---|---|---|
| CONTRABAND BAYOU | Louisiana | Fair | 1935 | 91 | 16,472 |
| DRAIN | Louisiana | Fair | 1935 | 91 | 5,020 |
| CYPRESS CREEK | Louisiana | Fair | 1935 | 91 | 61 |
| CREEK | Louisiana | Fair | 1935 | 91 | 130 |
| MCMANOR CANAL | Louisiana | Fair | 1935 | 91 | 7,858 |
| BAYOU WHITE VINE | Louisiana | Fair | 1935 | 91 | 4,369 |
| DRAIN | Louisiana | Fair | 1935 | 91 | 9,784 |
| BLACK RIVER | Louisiana | Fair | 1935 | 91 | 9,784 |
| BEAVER CREEK | Louisiana | Fair | 1935 | 91 | 2,266 |
| COOL CREEK | Louisiana | Good | 1935 | 91 | 2,403 |
| TERRYS CREEK | Louisiana | Fair | 1935 | 91 | 2,403 |
| MISSISSIPPI RIVER | Louisiana | Fair | 1936 | 90 | 55,210 |
| BAYOU LAFOURCHE | Louisiana | Fair | 1936 | 90 | 5,783 |
| BAYOU CARRON | Louisiana | Fair | 1936 | 90 | 2,508 |
| BAYOU COURTABLEAU | Louisiana | Fair | 1936 | 90 | 1,533 |
| Bayou Tesson | Louisiana | Fair | 1936 | 90 | 1,500 |
| Bayou Tesson | Louisiana | Fair | 1936 | 90 | 800 |
| ALLIGATOR BAYOU | Louisiana | Poor | 1936 | 90 | 2,376 |
| CREEK | Louisiana | Good | 1936 | 90 | 3,924 |
| CREEK | Louisiana | Fair | 1936 | 90 | 3,924 |
| SAND BEACH BAYOU | Louisiana | Fair | 1936 | 90 | 27,829 |
| CREEK | Louisiana | Fair | 1936 | 90 | 5,728 |
| CREEK | Louisiana | Fair | 1936 | 90 | 1,770 |
| B BONNE IDEE | Louisiana | Fair | 1936 | 90 | 1,405 |
| CREEK | Louisiana | Fair | 1936 | 90 | 1,405 |
| OUACHITA RIVER-LOUISVILL | Louisiana | Fair | 1936 | 90 | 17,683 |
| CREEK | Louisiana | Fair | 1936 | 90 | 464 |
| CREEK | Louisiana | Poor | 1936 | 90 | 464 |
| DRAIN | Louisiana | Fair | 1936 | 90 | 10,589 |
| DITCH | Louisiana | Fair | 1936 | 90 | 2,835 |
| DITCH | Louisiana | Fair | 1936 | 90 | 2,835 |
| CANE RIVER | Louisiana | Poor | 1936 | 90 | 11,003 |
| CANE RIVER | Louisiana | Poor | 1936 | 90 | 6,362 |
| CREEK | Louisiana | Fair | 1936 | 90 | 468 |
| BAYOU FISHER | Louisiana | Fair | 1936 | 90 | 3,698 |
| DRAIN | Louisiana | Fair | 1936 | 90 | 100 |
| BAYOU COURTABLEAU | Louisiana | Fair | 1937 | 89 | 2,097 |
| ICG RR | Louisiana | Poor | 1937 | 89 | 5,484 |
| RED BAYOU | Louisiana | Fair | 1937 | 89 | 22 |
| CREEK | Louisiana | Fair | 1937 | 89 | 5,474 |
| BRUSHY BAYOU | Louisiana | Fair | 1937 | 89 | 5,065 |
| CREEK | Louisiana | Fair | 1937 | 89 | 15,958 |
| CREEK | Louisiana | Fair | 1937 | 89 | 5,013 |
| CREEK | Louisiana | Fair | 1937 | 89 | 5,862 |
| DRAINAGE CANAL | Louisiana | Poor | 1937 | 89 | 8,548 |
| DRAINAGE CANAL | Louisiana | Fair | 1937 | 89 | 8,548 |
| DRAIN | Louisiana | Poor | 1937 | 89 | 4,912 |
| SABINE RIVER @ BURR FERR | Louisiana | Fair | 1937 | 89 | 1,229 |
| NO&NE RAILROAD | Louisiana | Poor | 1937 | 89 | 15,607 |
| ICG RAILROAD | Louisiana | Fair | 1937 | 89 | 2,206 |
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.