Structure 21000900240494B · Harrison County, MS
Carries US 90 over Biloxi Bay, Harrison/jackson Cl.
Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.
How ratings work8,766 ft end to end: about 24 football fields, or 1.7 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 multi-beam bridge.
| State | Mississippi |
| County | Harrison |
| Location | Harrison/jackson Cl |
| Carries | US 90 |
| Crosses | Biloxi Bay |
| Coordinates | 30.39244, -88.85844 |
| Material | Prestressed Concrete Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 8765.7 ft (2671.8 m) |
| Max Span | 250.0 ft (76.2 m) |
| Deck Width | 69.9 ft (21.3 m) |
| Deck Area | 56909.3 sq m |
| Main Spans | 1 |
| Year Built | 2008 |
| Avg Daily Traffic | 12,500 (2023) |
| Truck Traffic | 1% |
| Lanes On Bridge | 3 |
| Last Inspection | July 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 21000900240494B |
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.