80th Ave SW over Branch Knife River
PoorStark County, North Dakota · 8 North 6 East Richardton · Structure no. 000000045150010
- Built
- 1971
- 54 years old, rebuilt 2015
- Condition
- Poor
- inspected August 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 25 ft
- 1 main span
- Daily traffic
- 20
- 2018 count
- Owner
- County
- County Highway Agency
About this bridge
80th Ave SW over Branch Knife River is a steel stringer/multi-beam or girder carrying 80th Ave SW over Branch Knife River in Stark County, North Dakota. It was built in 1971 and reconstructed in 2015, so it is 54 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 20 vehicles a day, projected to reach 15 by 2038. The structure is 25 ft (7.6 m) long and 21 ft wide. If it were closed, the detour would be 3.7 mi (6 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| 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 80th Ave SW over Branch Knife River built?
It was built in 1971, making it 54 years old in 2025. It was reconstructed in 2015.
What condition is 80th Ave SW over Branch Knife River in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2024.
How much traffic does 80th Ave SW over Branch Knife River carry?
About 20 vehicles per day (2018 count).
How long is 80th Ave SW over Branch Knife River?
The structure is 25 ft (7.6 m) long with a longest span of 25 ft (7.6 m) and a deck 21 ft wide.
Who owns 80th Ave SW over Branch Knife River?
It is owned by the County Highway Agency.