Structure 100000010167030 · Allegany County, MD
Carries US 220 over Trib To North Br Potomac, 0.49 Mi N Of Md 135a.
A culvert 23 ft across with 4 openings. 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, so those are drawn as typical for a culvert.
| State | Maryland |
| County | Allegany |
| Location | 0.49 Mi N Of Md 135a |
| Carries | US 220 |
| Crosses | Trib To North Br Potomac |
| Coordinates | 39.46262, -78.97018 |
| Material | Steel |
| Design | Culvert |
| Total Length | 22.6 ft (6.9 m) |
| Max Span | 3.9 ft (1.2 m) |
| Deck Area | 94.5 sq m |
| Main Spans | 4 |
| Year Built | 1951 |
| Avg Daily Traffic | 7,111 (2009) |
| Truck Traffic | 8% |
| Lanes On Bridge | 2 |
| Last Inspection | September 2023 |
| 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 | 100000010167030 |
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.