Md 410 over Rock Creek
Fair Condition52 years old20,224 vehicles/day
Location
| State | Maryland |
| County | Montgomery |
| Location | 0.55 Mile East Of Md 186 |
| Carries | Md 410 |
| Crosses | Rock Creek |
| Coordinates | 38.99298, -77.06235 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 200.1 ft (61 m) |
| Max Span | 85.0 ft (25.9 m) |
| Deck Width | 76.1 ft (23.2 m) |
| Deck Area | 1415.2 sq m |
| Main Spans | 3 |
| Year Built | 1974 |
Traffic
| Avg Daily Traffic | 20,224 (2024) |
| Truck Traffic | 8% |
| Lanes On Bridge | 4 |
Inspection & Ownership
| Last Inspection | October 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 100000150059010 |