Structure 22900000020415 · Lafourche County, LA
Carries La0001 over Bayou Lafourche, La 1 Over Bayou Lafourche.
Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.
How ratings work10,216 ft end to end, longest span 290 ft: about 28 football fields, or 1.9 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 multi-beam bridge.
| State | Louisiana |
| County | Lafourche |
| Location | La 1 Over Bayou Lafourche |
| Carries | La0001 |
| Crosses | Bayou Lafourche |
| Coordinates | 29.23621, -90.19780 |
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 10215.9 ft (3113.8 m) |
| Max Span | 290.0 ft (88.4 m) |
| Deck Width | 42.7 ft (13 m) |
| Deck Area | 40479.4 sq m |
| Main Spans | 104 |
| Year Built | 2009 |
| Avg Daily Traffic | 3,305 (2021) |
| Truck Traffic | 20% |
| Lanes On Bridge | 2 |
| Last Inspection | November 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Historical significance is not determined |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 022900000020415 |
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.