Irrfb Nd Hway 1804 over Little Knife River
FairMountrail County, North Dakota · 5 North of Nd 23 · Structure no. 1804251782
- Built
- 2017
- 8 years old
- Condition
- Fair
- inspected August 2024
- Type
- Culvert
- Concrete
- Length
- 57 ft
- 4 main spans
- Daily traffic
- 500
- 2017 count
- Owner
- State
- State Highway Agency
About this bridge
Irrfb Nd Hway 1804 over Little Knife River is a concrete culvert carrying Irrfb Nd Hway 1804 over Little Knife River in Mountrail County, North Dakota. It was built in 2017, so it is 8 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 500 vehicles a day, roughly 14% of them trucks, projected to reach 500 by 2037. The structure is 57 ft (17.4 m) long. If it were closed, the detour would be 37.9 mi (61 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 | 9 Excellent | No problems noted. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Irrfb Nd Hway 1804 over Little Knife River built?
It was built in 2017, making it 8 years old in 2025.
What condition is Irrfb Nd Hway 1804 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 August 2024.
How much traffic does Irrfb Nd Hway 1804 over Little Knife River carry?
About 500 vehicles per day (2017 count), of which roughly 14% are trucks.
How long is Irrfb Nd Hway 1804 over Little Knife River?
The structure is 57 ft (17.4 m) long with a longest span of 14 ft (4.3 m).
Who owns Irrfb Nd Hway 1804 over Little Knife River?
It is owned by the State Highway Agency.