Main Avenue over Little Knife River
FairPosted for loadMorton County, North Dakota · 1 East of Hebron · Structure no. 000000030104060
- Built
- 1955
- 70 years old
- Condition
- Fair
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 55 ft
- 1 main span
- Daily traffic
- 130
- 2018 count
- Owner
- County
- County Highway Agency
About this bridge
Main Avenue over Little Knife River is a steel stringer/multi-beam or girder carrying Main Avenue over Little Knife River in Morton County, North Dakota. It was built in 1955, so it is 70 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. Its operating status is: posted for load restriction.
It carries about 130 vehicles a day, roughly 12% of them trucks, projected to reach 130 by 2038. The structure is 55 ft (16.8 m) long and 34 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 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 Main Avenue over Little Knife River built?
It was built in 1955, making it 70 years old in 2025.
What condition is Main Avenue over Little 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 September 2024.
How much traffic does Main Avenue over Little Knife River carry?
About 130 vehicles per day (2018 count), of which roughly 12% are trucks.
How long is Main Avenue over Little Knife River?
The structure is 55 ft (16.8 m) long with a longest span of 50 ft (15.2 m) and a deck 34 ft wide.
Who owns Main Avenue over Little Knife River?
It is owned by the County Highway Agency.