Observation Drive over Little Seneca Creek
Good Condition32 years old11,584 vehicles/day
Location
| State | Maryland |
| County | Montgomery |
| Location | 0.3 Miles East Of I-270 |
| Carries | Observation Drive |
| Crosses | Little Seneca Creek |
| Coordinates | 39.19469, -77.25450 |
Condition Ratings
| Overall Condition | Good |
| Channel/Waterway | 7 (Good) |
| Culvert | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel |
| Design | Culvert |
| Total Length | 39.4 ft (12 m) |
| Max Span | 14.1 ft (4.3 m) |
| Deck Area | 248.4 sq m |
| Year Built | 1994 |
Traffic
| Avg Daily Traffic | 11,584 (2022) |
| Truck Traffic | 1% |
| Lanes On Bridge | 4 |
Inspection & Ownership
| Last Inspection | December 2023 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 200000M-0410010 |