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 |
|---|---|---|---|---|---|
| WEST PEARL RIVER | Louisiana | Poor | 1933 | 93 | 1,215 |
| WEST MIDDLE RIVER | Louisiana | Poor | 1933 | 93 | 1,215 |
| MIDDLE MIDDLE PEARL RIVE | Louisiana | Poor | 1933 | 93 | 1,215 |
| E MIDDLE PEARL RIVER | Louisiana | Poor | 1933 | 93 | 1,215 |
| SLOUGH | Louisiana | Fair | 1933 | 93 | 11,418 |
| CREEK | Louisiana | Fair | 1933 | 93 | 11,418 |
| CREEK | Louisiana | Fair | 1933 | 93 | 11,418 |
| CREEK | Louisiana | Fair | 1933 | 93 | 10,183 |
| CREEK | Louisiana | Fair | 1933 | 93 | 9,408 |
| CREEK | Louisiana | Fair | 1933 | 93 | 9,408 |
| LITTLE BAYOU | Louisiana | Fair | 1933 | 93 | 11,718 |
| CREEK | Louisiana | Fair | 1933 | 93 | 11,718 |
| BAYOU LIBERTY | Louisiana | Fair | 1933 | 93 | 16,944 |
| BAYOU BONFOUCA | Louisiana | Fair | 1933 | 93 | 16,944 |
| DRAIN | Louisiana | Fair | 1933 | 93 | 16,944 |
| CREEK | Louisiana | Good | 1933 | 93 | 7,775 |
| ABITA CREEK | Louisiana | Good | 1933 | 93 | 7,775 |
| BAYOU QUEUE DE TORTUE | Louisiana | Good | 1934 | 92 | 9,189 |
| CREEK | Louisiana | Good | 1934 | 92 | 9,189 |
| Bayou Queue De Tortue | Louisiana | Fair | 1934 | 92 | 7,042 |
| CREEK | Louisiana | Good | 1934 | 92 | 7,540 |
| RED RIVER @ TEXAS ST. | Louisiana | Fair | 1934 | 92 | 11,856 |
| BLACK BAYOU | Louisiana | Fair | 1934 | 92 | 5,200 |
| BRUSHY BRANCH | Louisiana | Fair | 1934 | 92 | 3,399 |
| COLLINSBURG CREEK | Louisiana | Fair | 1934 | 92 | 3,399 |
| DRAIN | Louisiana | Fair | 1934 | 92 | 4,262 |
| DRAIN | Louisiana | Fair | 1934 | 92 | 4,262 |
| BAYOU | Louisiana | Fair | 1934 | 92 | 5,849 |
| CREEK | Louisiana | Good | 1934 | 92 | 11,113 |
| BAYOU SAN MIGUEL RELIEF | Louisiana | Fair | 1934 | 92 | 1,587 |
| NORTH FORK CREEK | Louisiana | Fair | 1934 | 92 | 1,900 |
| CREEK | Louisiana | Fair | 1934 | 92 | 1,900 |
| EAST PEARL RIVER | Louisiana | Poor | 1934 | 92 | 1,215 |
| BONNET CARRE | Louisiana | Fair | 1935 | 91 | 25,051 |
| BAYOU DESALLEMAND | Louisiana | Fair | 1935 | 91 | 1,834 |
| BAYOU PETITE PRAIRIE | Louisiana | Fair | 1935 | 91 | 2,845 |
| BAYOU TESSON | Louisiana | Fair | 1935 | 91 | 500 |
| BAYOU TESSON | Louisiana | Fair | 1935 | 91 | 800 |
| LITTLE CYPRESS BAYOU | Louisiana | Fair | 1935 | 91 | 3,803 |
| DRAIN | Louisiana | Fair | 1935 | 91 | 2,638 |
| DRAIN | Louisiana | Fair | 1935 | 91 | 2,238 |
| DRAIN | Louisiana | Good | 1935 | 91 | 349 |
| TANYARD CREEK | Louisiana | Fair | 1935 | 91 | 4,174 |
| ICG RR @ SIBLEY | Louisiana | Poor | 1935 | 91 | 6,469 |
| KCS RR MINDEN | Louisiana | Poor | 1935 | 91 | 6,459 |
| MILE CREEK | Louisiana | Fair | 1935 | 91 | 158 |
| CREEK | Louisiana | Fair | 1935 | 91 | 1,405 |
| BAYOU GALION | Louisiana | Poor | 1935 | 91 | 1,405 |
| YOUNGS BAYOU | Louisiana | Fair | 1935 | 91 | 17,683 |
| CREEK | Louisiana | Fair | 1935 | 91 | 163 |
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.