Nd Highway 21 over Branch Cannonball River
FairHettinger County, North Dakota · 2 West of Burt · Structure no. 0021058657
- Built
- 1951
- 74 years old
- Condition
- Fair
- inspected June 2023
- Type
- Culvert
- Concrete
- Length
- 28 ft
- 3 main spans
- Daily traffic
- 510
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
Nd Highway 21 over Branch Cannonball River is a concrete culvert carrying Nd Highway 21 over Branch Cannonball River in Hettinger County, North Dakota. It was built in 1951, so it is 74 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 510 vehicles a day, roughly 10% of them trucks, projected to reach 608 by 2039. The structure is 28 ft (8.5 m) long. If it were closed, the detour would be 60.3 mi (97 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 |
|---|---|---|
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
| Culvert | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Nd Highway 21 over Branch Cannonball River built?
It was built in 1951, making it 74 years old in 2025.
What condition is Nd Highway 21 over Branch Cannonball 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 June 2023.
How much traffic does Nd Highway 21 over Branch Cannonball River carry?
About 510 vehicles per day (2019 count), of which roughly 10% are trucks.
How long is Nd Highway 21 over Branch Cannonball River?
The structure is 28 ft (8.5 m) long with a longest span of 9 ft (2.7 m).
Who owns Nd Highway 21 over Branch Cannonball River?
It is owned by the State Highway Agency.