Structure 200000M-0490030 · Montgomery County, MD
Carries Bonny Brook Lane over Great Seneca Creek Tribu, 0.05 Mi. N. Of Hawkins CR.
A culvert 22 ft across. 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 | Montgomery |
| Location | 0.05 Mi. N. Of Hawkins CR |
| Carries | Bonny Brook Lane |
| Crosses | Great Seneca Creek Tribu |
| Coordinates | 39.27037, -77.19011 |
| Material | Aluminum/Wrought Iron/Cast Iron |
| Design | Culvert |
| Total Length | 21.7 ft (6.6 m) |
| Max Span | 8.9 ft (2.7 m) |
| Deck Area | 86.5 sq m |
| Year Built | 2000 |
| Avg Daily Traffic | 200 (2024) |
| Lanes On Bridge | 2 |
| Last Inspection | October 2024 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 200000M-0490030 |
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.