Duplantis Bridge over Petit Caillou Bayou
Good Condition53 years old5,180 vehicles/day
Location
| State | Louisiana |
| County | Terrebonne |
| Location | 0144 Log Mi From In |
| Carries | Duplantis Bridge |
| Crosses | Petit Caillou Bayou |
| Coordinates | 29.52989, -90.59979 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel |
| Design | Movable - Lift |
| Total Length | 136.2 ft (41.5 m) |
| Max Span | 55.1 ft (16.8 m) |
| Deck Width | 29.2 ft (8.9 m) |
| Deck Area | 369.4 sq m |
| Main Spans | 1 |
| Year Built | 1973 |
Traffic
| Avg Daily Traffic | 5,180 (2022) |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 623 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 025529318903591 |