Oaklyn Drive over Rock Run
Fair Condition37 years old4,934 vehicles/day
Location
| State | Maryland |
| County | Montgomery |
| Location | 1 Miles South Of Md 189 |
| Carries | Oaklyn Drive |
| Crosses | Rock Run |
| Coordinates | 39.00373, -77.21428 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Slab |
| Total Length | 47.9 ft (14.6 m) |
| Max Span | 23.0 ft (7 m) |
| Deck Width | 47.2 ft (14.4 m) |
| Deck Area | 210.2 sq m |
| Main Spans | 2 |
| Year Built | 1989 |
Traffic
| Avg Daily Traffic | 4,934 (2024) |
| Truck Traffic | 5% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | December 2024 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 200000M-0012010 |