Mount Aetna Road over Antietam Creek
Fair Condition46 years old5,120 vehicles/day
Location
| State | Maryland |
| County | Washington |
| Location | 0.8 Mi W Of US RTE 40 |
| Carries | Mount Aetna Road |
| Crosses | Antietam Creek |
| Coordinates | 39.63091, -77.71041 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 5 (Fair) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 200.1 ft (61 m) |
| Max Span | 100.1 ft (30.5 m) |
| Deck Width | 52.2 ft (15.9 m) |
| Deck Area | 969.9 sq m |
| Main Spans | 2 |
| Year Built | 1980 |
Traffic
| Avg Daily Traffic | 5,120 (2024) |
| Truck Traffic | 5% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 224 |
| Inspection Frequency | Every 24 months |
| Owner | City/Municipal Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 200000W-H-32010 |