Structure 24504503606221 · St. Charles County, LA
Carries I0310 over Icg.rr Ramp E F &h La4, 5.14 Mi S I-10 I-310 Jct.
Set by its lowest-rated component: Deck and Superstructure and Substructure at 6 of 9.
How ratings work5,145 ft end to end, longest span 266 ft: about 14 football fields. 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 | St. Charles |
| Location | 5.14 Mi S I-10 I-310 Jct |
| Carries | I0310 |
| Crosses | Icg.rr Ramp E F &h La4 |
| Coordinates | 29.95613, -90.36620 |
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 5145.0 ft (1568.2 m) |
| Max Span | 266.1 ft (81.1 m) |
| Deck Width | 82.0 ft (25 m) |
| Deck Area | 39,205 sq m |
| Main Spans | 5 |
| Year Built | 1983 |
| Avg Daily Traffic | 47,396 (2021) |
| Truck Traffic | 25% |
| Lanes On Bridge | 4 |
| Lanes Under Bridge | 13 |
| Last Inspection | October 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | Not applicable |
| Structure Number | 024504503606221 |
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.