Nd Highway 11 over Bois De Sioux River
FairRichland County, North Dakota · East of Fairmount · Structure no. 0011182459
- Built
- 1961
- 64 years old, rebuilt 1990
- Condition
- Fair
- inspected August 2024
- Type
- Tee Beam
- Concrete Continuous
- Length
- 115 ft
- 3 main spans
- Daily traffic
- 630
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
Nd Highway 11 over Bois De Sioux River is a concrete continuous tee beam carrying Nd Highway 11 over Bois De Sioux River in Richland County, North Dakota. It was built in 1961 and reconstructed in 1990, so it is 64 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 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 630 vehicles a day, roughly 24% of them trucks, projected to reach 495 by 2039. The structure is 115 ft (35.1 m) long and 36 ft wide. If it were closed, the detour would be 24.9 mi (40 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 | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Nd Highway 11 over Bois De Sioux River built?
It was built in 1961, making it 64 years old in 2025. It was reconstructed in 1990.
What condition is Nd Highway 11 over Bois De Sioux 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 Nd Highway 11 over Bois De Sioux River carry?
About 630 vehicles per day (2019 count), of which roughly 24% are trucks.
How long is Nd Highway 11 over Bois De Sioux River?
The structure is 115 ft (35.1 m) long with a longest span of 42 ft (12.8 m) and a deck 36 ft wide.
Who owns Nd Highway 11 over Bois De Sioux River?
It is owned by the State Highway Agency.