Bullfrog Road over Monocacy River
Fair Condition118 years old324 vehicles/day
Location
| State | Maryland |
| County | Frederick |
| Location | 0.6 Mi S Of Bollinger Scl |
| Carries | Bullfrog Road |
| Crosses | Monocacy River |
| Coordinates | 39.69531, -77.24009 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 5 (Fair) |
| Substructure | 7 (Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Aluminum/Wrought Iron/Cast Iron |
| Design | Truss - Thru |
| Total Length | 183.1 ft (55.8 m) |
| Max Span | 183.1 ft (55.8 m) |
| Deck Width | 16.4 ft (5 m) |
| Deck Area | 279 sq m |
| Main Spans | 1 |
| Year Built | 1908 (reconstructed 1995) |
Traffic
| Avg Daily Traffic | 324 (2022) |
| Truck Traffic | 1% |
| Lanes On Bridge | 1 |
Inspection & Ownership
| Last Inspection | 424 |
| Inspection Frequency | Every 12 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is on the National Register of Historic Places |
| Structure Number | 200000F-0506010 |