Nd Highway 8 over Thirty Mile Creek
FairHettinger County, North Dakota · 10 North of Mott · Structure no. 0008055283
- Built
- 1962
- 63 years old
- Condition
- Fair
- inspected October 2023
- Type
- Tee Beam
- Concrete Continuous
- Length
- 100 ft
- 3 main spans
- Daily traffic
- 450
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
Nd Highway 8 over Thirty Mile Creek is a concrete continuous tee beam carrying Nd Highway 8 over Thirty Mile Creek in Hettinger County, North Dakota. It was built in 1962, so it is 63 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 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 450 vehicles a day, roughly 13% of them trucks, projected to reach 555 by 2039. The structure is 100 ft (30.5 m) long and 36 ft wide. If it were closed, the detour would be 52.2 mi (84 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 Nd Highway 8 over Thirty Mile Creek built?
It was built in 1962, making it 63 years old in 2025.
What condition is Nd Highway 8 over Thirty Mile 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 October 2023.
How much traffic does Nd Highway 8 over Thirty Mile Creek carry?
About 450 vehicles per day (2019 count), of which roughly 13% are trucks.
How long is Nd Highway 8 over Thirty Mile Creek?
The structure is 100 ft (30.5 m) long with a longest span of 38 ft (11.6 m) and a deck 36 ft wide.
Who owns Nd Highway 8 over Thirty Mile Creek?
It is owned by the State Highway Agency.