Structure 100000120050010 · Harford County, MD
Carries Md 543 over Br Of Bynum Run, 0.3 Mile North Of Md 136.
22 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 multi-beam bridge.
| State | Maryland |
| County | Harford |
| Location | 0.3 Mile North Of Md 136 |
| Carries | Md 543 |
| Crosses | Br Of Bynum Run |
| Coordinates | 39.50843, -76.27515 |
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 22.0 ft (6.7 m) |
| Max Span | 21.0 ft (6.4 m) |
| Deck Width | 31.5 ft (9.6 m) |
| Deck Area | 64.3 sq m |
| Main Spans | 1 |
| Year Built | 1936 (reconstructed 1959) |
| Avg Daily Traffic | 14,221 (2009) |
| Truck Traffic | 8% |
| Lanes On Bridge | 2 |
| Last Inspection | January 2025 |
| Inspection Frequency | Every 12 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 7 — Countermeasures installed |
| Structure Number | 100000120050010 |
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.