Structure 24500070309182 · St. Charles County, LA
Carries Us0061 over Bonnet Carre, .7 Mi West Of La 48.
Set by its lowest-rated component: Deck and Superstructure and Substructure at 6 of 9.
How ratings work6,006 ft end to end, longest span 38 ft: about 17 football fields, or 1.1 miles. Lengths are drawn to scale; at this length a semi-truck would be a speck. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a tee-beam bridge.
| State | Louisiana |
| County | St. Charles |
| Location | .7 Mi West Of La 48 |
| Carries | Us0061 |
| Crosses | Bonnet Carre |
| Coordinates | 30.03254, -90.43011 |
| Material | Concrete |
| Design | Tee Beam |
| Total Length | 6005.9 ft (1830.6 m) |
| Max Span | 38.1 ft (11.6 m) |
| Deck Width | 45.6 ft (13.9 m) |
| Deck Area | 25445.3 sq m |
| Main Spans | 155 |
| Year Built | 1935 |
| Avg Daily Traffic | 25,051 (2021) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
| Last Inspection | October 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is eligible for the National Register |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 024500070309182 |
Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."
A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.