Structure 200000BC3556020 · Baltimore County, MD
Carries Hillen Road over Chinquapin Run, 0.2 Mi N Of Coldspring La.
A culvert 21 ft across with 2 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 | Baltimore |
| Location | 0.2 Mi N Of Coldspring La |
| Carries | Hillen Road |
| Crosses | Chinquapin Run |
| Coordinates | 39.34850, -76.58473 |
| Material | Concrete |
| Design | Culvert |
| Total Length | 21.0 ft (6.4 m) |
| Max Span | 11.2 ft (3.4 m) |
| Deck Width | 71.9 ft (21.9 m) |
| Deck Area | 140.2 sq m |
| Main Spans | 2 |
| Year Built | 1900 (reconstructed 1950) |
| Avg Daily Traffic | 11,996 (2016) |
| Truck Traffic | 5% |
| Lanes On Bridge | 6 |
| Last Inspection | August 2024 |
| Inspection Frequency | Every 24 months |
| Owner | City/Municipal Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 200000BC3556020 |
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.