Structure 23600180200001 · Orleans County, LA
Carries Us0011 over Lake Pontchartrain, .01 Mi North Of I-10.
Set by its lowest-rated component: Superstructure and Substructure at 3 of 9.
How ratings work24,922 ft end to end, longest span 150 ft: about 69 football fields, or 4.7 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 bascule bridge (drawn closed).
| State | Louisiana |
| County | Orleans |
| Location | .01 Mi North Of I-10 |
| Carries | Us0011 |
| Crosses | Lake Pontchartrain |
| Coordinates | 30.15544, -89.85607 |
| Material | Steel |
| Design | Movable - Bascule |
| Total Length | 24921.9 ft (7596.2 m) |
| Max Span | 149.9 ft (45.7 m) |
| Deck Width | 33.5 ft (10.2 m) |
| Deck Area | 77481.2 sq m |
| Main Spans | 702 |
| Year Built | 1938 |
| Avg Daily Traffic | 3,912 (2021) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
| Last Inspection | May 2024 |
| Inspection Frequency | Every 12 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is eligible for the National Register |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 023600180200001 |
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.