Irrsr County Hiway over Porcupine Creek
Good Condition35 years old20 vehicles/day
Location
| State | North Dakota |
| County | Sioux |
| Location | 4 West 8 North Ft Yates |
| Carries | Irrsr County Hiway |
| Crosses | Porcupine Creek |
| Coordinates | 46.19352, -100.75220 |
Condition Ratings
| Overall Condition | Good |
| Deck | 9 (Excellent) |
| Superstructure | 9 (Excellent) |
| Substructure | 8 (Very Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete Continuous |
| Design | Box Beam - Single/Spread |
| Total Length | 96.1 ft (29.3 m) |
| Max Span | 39.0 ft (11.9 m) |
| Deck Width | 31.2 ft (9.5 m) |
| Deck Area | 278.4 sq m |
| Main Spans | 3 |
| Year Built | 1991 |
Traffic
| Avg Daily Traffic | 20 (2019) |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 424 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000043160160 |