Structure 71000240103501 · Calcasieu County, LA
Carries Us0171 over Calcasieu River, 1.7 Mi North Of I-10.
Set by its lowest-rated component: Deck and Superstructure and Substructure at 5 of 9.
How ratings work5,702 ft end to end, longest span 200 ft: about 16 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 girder bridge.
| State | Louisiana |
| County | Calcasieu |
| Location | 1.7 Mi North Of I-10 |
| Carries | Us0171 |
| Crosses | Calcasieu River |
| Coordinates | 30.28297, -93.18640 |
| Material | Steel |
| Design | Girder and Floorbeam |
| Total Length | 5702.1 ft (1,738 m) |
| Max Span | 200.1 ft (61 m) |
| Deck Width | 65.6 ft (20 m) |
| Deck Area | 34,760 sq m |
| Main Spans | 77 |
| Year Built | 1969 |
| Avg Daily Traffic | 32,659 (2021) |
| Truck Traffic | 17% |
| Lanes On Bridge | 4 |
| Last Inspection | April 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is eligible for the National Register |
| Scour Critical | 7 — Countermeasures installed |
| Structure Number | 071000240103501 |
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.