Structure 100000130003010 · Howard County, MD
Carries US 1 over Deep Run, 0.56 Mile North Of Md 175.
Set by its lowest-rated component: Deck and Superstructure and Substructure at 6 of 9.
How ratings work22 ft end to end. 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 deck arch.
| State | Maryland |
| County | Howard |
| Location | 0.56 Mile North Of Md 175 |
| Carries | US 1 |
| Crosses | Deep Run |
| Coordinates | 39.17576, -76.77623 |
| Material | Concrete |
| Design | Arch - Deck |
| Total Length | 22.0 ft (6.7 m) |
| Max Span | 22.0 ft (6.7 m) |
| Deck Width | 67.9 ft (20.7 m) |
| Deck Area | 138.7 sq m |
| Main Spans | 1 |
| Year Built | 1929 (reconstructed 1955) |
| Avg Daily Traffic | 29,180 (2013) |
| Truck Traffic | 8% |
| Lanes On Bridge | 4 |
| Last Inspection | June 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 | 100000130003010 |
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.