12th Street SW over Knife River
Good Condition39 years old107 vehicles/day
Location
| State | North Dakota |
| County | Dunn |
| Location | 3 West 1 North Manning |
| Carries | 12th Street SW |
| Crosses | Knife River |
| Coordinates | 47.24159, -102.81743 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 8 (Very Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 7 — Countermeasures installed |
Physical Characteristics
| Material | Prestressed Concrete Continuous |
| Design | Box Beam - Single/Spread |
| Total Length | 109.9 ft (33.5 m) |
| Max Span | 37.1 ft (11.3 m) |
| Deck Width | 31.5 ft (9.6 m) |
| Deck Area | 321.6 sq m |
| Main Spans | 3 |
| Year Built | 1987 |
Traffic
| Avg Daily Traffic | 107 (2018) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 623 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000013114390 |