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 |
|---|---|---|---|---|---|
| CREEK | Louisiana | Fair | 1948 | 78 | 389 |
| BUSHNECK BAYOUREL | Louisiana | Fair | 1948 | 78 | 3,931 |
| BUSHNECK BAYOU | Louisiana | Fair | 1948 | 78 | 3,931 |
| CREEK | Louisiana | Fair | 1948 | 78 | 3,216 |
| CREEK | Louisiana | Fair | 1948 | 78 | 4,413 |
| DRAIN | Louisiana | Fair | 1948 | 78 | 1,130 |
| MILE CREEK | Louisiana | Poor | 1948 | 78 | 9,109 |
| L DUGDEMONA RIVER | Louisiana | Fair | 1948 | 78 | 455 |
| CREEK | Louisiana | Fair | 1948 | 78 | 455 |
| CREEK | Louisiana | Fair | 1948 | 78 | 3,275 |
| CHOUDRANT CREEK | Louisiana | Fair | 1948 | 78 | 3,275 |
| CREEK | Louisiana | Fair | 1948 | 78 | 3,275 |
| CREEK | Louisiana | Fair | 1948 | 78 | 2,216 |
| CREEK | Louisiana | Fair | 1948 | 78 | 703 |
| CREEK | Louisiana | Fair | 1948 | 78 | 703 |
| CREEK | Louisiana | Poor | 1948 | 78 | 422 |
| HICKORY BRANCH | Louisiana | Fair | 1948 | 78 | 2,079 |
| CREEK | Louisiana | Fair | 1948 | 78 | 2,079 |
| CREEK | Louisiana | Fair | 1948 | 78 | 6,586 |
| FISH CREEK | Louisiana | Fair | 1948 | 78 | 7,084 |
| LITTLE CREEK | Louisiana | Fair | 1948 | 78 | 7,084 |
| CYPRESS CREEK | Louisiana | Fair | 1948 | 78 | 1,898 |
| LITTLE SANDY BAYOU | Louisiana | Fair | 1948 | 78 | 1,977 |
| CANE RIVER | Louisiana | Poor | 1948 | 78 | 996 |
| CANE RIVER SPILLWAY | Louisiana | Good | 1948 | 78 | 111 |
| CREEK | Louisiana | Poor | 1948 | 78 | 3,518 |
| CHICKASAW CREEK | Louisiana | Poor | 1948 | 78 | 3,518 |
| LAKE BRUIN BAYOU | Louisiana | Fair | 1948 | 78 | 1,873 |
| DRAINAGE CANAL | Louisiana | Fair | 1948 | 78 | 10,492 |
| CLAY BAYOU | Louisiana | Fair | 1948 | 78 | 503 |
| JASPER CREEK | Louisiana | Fair | 1948 | 78 | 2,761 |
| ALEXANDER CREEK | Louisiana | Fair | 1948 | 78 | 2,761 |
| HAMMER CREEK TRIB | Louisiana | Fair | 1948 | 78 | 1,585 |
| HAMMER CREEK | Louisiana | Good | 1948 | 78 | 1,585 |
| N O P B RR(CLAIBORNE AVE | Louisiana | Poor | 1949 | 77 | 36,993 |
| BAYOU PLAQUEMINE BRULE | Louisiana | Fair | 1949 | 77 | 4,120 |
| DRAIN | Louisiana | Good | 1949 | 77 | 1,664 |
| COULEE DE MANUEL | Louisiana | Fair | 1949 | 77 | 3,440 |
| COULEE | Louisiana | Fair | 1949 | 77 | 200 |
| COULEE | Louisiana | Fair | 1949 | 77 | 200 |
| Bayou Teche | Louisiana | Fair | 1949 | 77 | 4,721 |
| WILLIAMS CREEK | Louisiana | Fair | 1949 | 77 | 898 |
| MIDDLEFORK BAYOU DARBONN | Louisiana | Fair | 1949 | 77 | 990 |
| MIDDLEFORK B.DARBONNE RL | Louisiana | Fair | 1949 | 77 | 990 |
| NICK CREEK | Louisiana | Fair | 1949 | 77 | 990 |
| CREEK | Louisiana | Fair | 1949 | 77 | 1,435 |
| INDIAN CREEK | Louisiana | Poor | 1949 | 77 | 123 |
| BAGET CREEK | Louisiana | Fair | 1949 | 77 | 4,394 |
| WILLIAMS CREEK | Louisiana | Fair | 1949 | 77 | 6,672 |
| LITTLE CROOKED CR | Louisiana | Fair | 1949 | 77 | 4,087 |
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.