Irrsr Nd Highway 6 over Porcupine Creek
FairSioux County, North Dakota · 15 North of Selfridge · Structure no. 0006027176
- Built
- 1987
- 38 years old
- Condition
- Fair
- inspected June 2024
- Type
- Box Beam or Girders - Single or Spread
- Prestressed Concrete Continuous
- Length
- 126 ft
- 3 main spans
- Daily traffic
- 270
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
Irrsr Nd Highway 6 over Porcupine Creek is a prestressed concrete continuous box beam or girders - single or spread carrying Irrsr Nd Highway 6 over Porcupine Creek in Sioux County, North Dakota. It was built in 1987, so it is 38 years old, younger than the North Dakota average of 48.2 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 270 vehicles a day, roughly 15% of them trucks, projected to reach 387 by 2039. The structure is 126 ft (38.4 m) long and 35 ft wide. If it were closed, the detour would be 39.8 mi (64 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Irrsr Nd Highway 6 over Porcupine Creek built?
It was built in 1987, making it 38 years old in 2025.
What condition is Irrsr Nd Highway 6 over Porcupine Creek in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2024.
How much traffic does Irrsr Nd Highway 6 over Porcupine Creek carry?
About 270 vehicles per day (2019 count), of which roughly 15% are trucks.
How long is Irrsr Nd Highway 6 over Porcupine Creek?
The structure is 126 ft (38.4 m) long with a longest span of 47 ft (14.3 m) and a deck 35 ft wide.
Who owns Irrsr Nd Highway 6 over Porcupine Creek?
It is owned by the State Highway Agency.