Harmonica RD over Up Rr
Poor Condition125 years old35 vehicles/day
Location
| State | Missouri |
| County | Mercer |
| Location | S 34 T 65 N R 24 W |
| Carries | Harmonica RD |
| Crosses | Up Rr |
| Coordinates | 40.38989, -93.58006 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 4 (Poor) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 4 (Poor) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel |
| Design | Girder and Floorbeam |
| Total Length | 211.0 ft (64.3 m) |
| Max Span | 65.9 ft (20.1 m) |
| Deck Width | 21.0 ft (6.4 m) |
| Deck Area | 411.5 sq m |
| Main Spans | 1 |
| Year Built | 1901 |
Traffic
| Avg Daily Traffic | 35 (2024) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 224 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 17756 |