Md 355 over Great Seneca Creek
Good Condition27 years old31,050 vehicles/day
Location
| State | Maryland |
| County | Montgomery |
| Location | 1.32 Miles N Of Md 124 |
| Carries | Md 355 |
| Crosses | Great Seneca Creek |
| Coordinates | 39.16584, -77.22803 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 9 (Excellent) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel Continuous |
| Design | Girder and Floorbeam |
| Total Length | 288.1 ft (87.8 m) |
| Max Span | 109.9 ft (33.5 m) |
| Deck Width | 111.9 ft (34.1 m) |
| Deck Area | 2994.0 sq m |
| Main Spans | 3 |
| Year Built | 1999 |
Traffic
| Avg Daily Traffic | 31,050 (2009) |
| Truck Traffic | 4% |
| Lanes On Bridge | 6 |
Inspection & Ownership
| Last Inspection | 424 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 100000150055010 |