Nd Highway 8 over Branch of Knife River
FairStark County, North Dakota · 10 North JCT I-94 · Structure no. 0008090657
- Built
- 1960
- 65 years old
- Condition
- Fair
- inspected October 2023
- Type
- Tee Beam
- Concrete Continuous
- Length
- 75 ft
- 2 main spans
- Daily traffic
- 400
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
Nd Highway 8 over Branch of Knife River is a concrete continuous tee beam carrying Nd Highway 8 over Branch of Knife River in Stark County, North Dakota. It was built in 1960, so it is 65 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 5 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 400 vehicles a day, roughly 15% of them trucks, projected to reach 502 by 2039. The structure is 75 ft (22.9 m) long and 35 ft wide. If it were closed, the detour would be 42.9 mi (69 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 Branch of Knife River built?
It was built in 1960, making it 65 years old in 2025.
What condition is Nd Highway 8 over Branch of Knife River 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 Branch of Knife River carry?
About 400 vehicles per day (2019 count), of which roughly 15% are trucks.
How long is Nd Highway 8 over Branch of Knife River?
The structure is 75 ft (22.9 m) long with a longest span of 37 ft (11.3 m) and a deck 35 ft wide.
Who owns Nd Highway 8 over Branch of Knife River?
It is owned by the State Highway Agency.