Nd Highway 30 over Big Slough
GoodWells County, North Dakota · 8 North Nd 15 · Structure no. 0030113377
- Built
- 1982
- 43 years old
- Condition
- Good
- inspected October 2023
- Type
- Culvert
- Concrete
- Length
- 21 ft
- 2 main spans
- Daily traffic
- 220
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
Nd Highway 30 over Big Slough is a concrete culvert carrying Nd Highway 30 over Big Slough in Wells County, North Dakota. It was built in 1982, so it is 43 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 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 220 vehicles a day, roughly 18% of them trucks, projected to reach 220 by 2039. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 87 mi (140 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 | 7 Good | Some minor problems. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Nd Highway 30 over Big Slough built?
It was built in 1982, making it 43 years old in 2025.
What condition is Nd Highway 30 over Big Slough 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 October 2023.
How much traffic does Nd Highway 30 over Big Slough carry?
About 220 vehicles per day (2019 count), of which roughly 18% are trucks.
How long is Nd Highway 30 over Big Slough?
The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).
Who owns Nd Highway 30 over Big Slough?
It is owned by the State Highway Agency.