Irrsr Nd Hiway 31 over Antelope Creek
GoodSioux County, North Dakota · 10 North of Sd Border · Structure no. 0031009584
- Built
- 1964
- 61 years old
- Condition
- Good
- inspected May 2021
- Type
- Culvert
- Concrete
- Length
- 26 ft
- 3 main spans
- Daily traffic
- 160
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
Irrsr Nd Hiway 31 over Antelope Creek is a concrete culvert carrying Irrsr Nd Hiway 31 over Antelope Creek in Sioux County, North Dakota. It was built in 1964, so it is 61 years old, older than the North Dakota average of 48.2 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 160 vehicles a day, roughly 31% of them trucks, projected to reach 245 by 2039. The structure is 26 ft (7.9 m) long. If it were closed, the detour would be 44.7 mi (72 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Irrsr Nd Hiway 31 over Antelope Creek built?
It was built in 1964, making it 61 years old in 2025.
What condition is Irrsr Nd Hiway 31 over Antelope Creek in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2021.
How much traffic does Irrsr Nd Hiway 31 over Antelope Creek carry?
About 160 vehicles per day (2019 count), of which roughly 31% are trucks.
How long is Irrsr Nd Hiway 31 over Antelope Creek?
The structure is 26 ft (7.9 m) long with a longest span of 8 ft (2.4 m).
Who owns Irrsr Nd Hiway 31 over Antelope Creek?
It is owned by the State Highway Agency.