Structure 300000CHZ301010 · Charles County, MD
Carries U.s. Route 301 over Potomac River, On Virginia Line.
9,966 ft end to end, longest span 350 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 | Maryland |
| County | Charles |
| Location | On Virginia Line |
| Carries | U.s. Route 301 |
| Crosses | Potomac River |
| Coordinates | 38.35934, -77.01537 |
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 9966.2 ft (3037.7 m) |
| Max Span | 350.1 ft (106.7 m) |
| Deck Width | 61.4 ft (18.7 m) |
| Deck Area | 56805.0 sq m |
| Main Spans | 3 |
| Year Built | 2022 |
| Avg Daily Traffic | 18,550 (2020) |
| Truck Traffic | 8% |
| Lanes On Bridge | 4 |
| Last Inspection | January 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Toll Authority |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 300000CHZ301010 |
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.