58th Ave SW over Knife River
FairMercer County, North Dakota · 1 Mile East of Beulah · Structure no. 000000029122210
- Built
- 1982
- 43 years old
- Condition
- Fair
- inspected July 2024
- Type
- Box Beam or Girders - Single or Spread
- Prestressed Concrete Continuous
- Length
- 184 ft
- 3 main spans
- Daily traffic
- 100
- 2018 count
- Owner
- County
- County Highway Agency
About this bridge
58th Ave SW over Knife River is a prestressed concrete continuous box beam or girders - single or spread carrying 58th Ave SW over Knife River in Mercer 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 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 100 vehicles a day, roughly 12% of them trucks, projected to reach 100 by 2038. The structure is 184 ft (56.1 m) long and 31 ft wide. If it were closed, the detour would be 6.2 mi (10 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 | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 58th Ave SW over Knife River built?
It was built in 1982, making it 43 years old in 2025.
What condition is 58th Ave SW over 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 July 2024.
How much traffic does 58th Ave SW over Knife River carry?
About 100 vehicles per day (2018 count), of which roughly 12% are trucks.
How long is 58th Ave SW over Knife River?
The structure is 184 ft (56.1 m) long with a longest span of 69 ft (21 m) and a deck 31 ft wide.
Who owns 58th Ave SW over Knife River?
It is owned by the County Highway Agency.