Nd Highway 31 over Sweet Briar Creek
FairMorton County, North Dakota · 6 North of I-94 · Structure no. 0031084239
- Built
- 1932
- 93 years old, rebuilt 1976
- Condition
- Fair
- inspected June 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 65 ft
- 1 main span
- Daily traffic
- 930
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
Nd Highway 31 over Sweet Briar Creek is a steel stringer/multi-beam or girder carrying Nd Highway 31 over Sweet Briar Creek in Morton County, North Dakota. It was built in 1932 and reconstructed in 1976, so it is 93 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 930 vehicles a day, roughly 12% of them trucks, projected to reach 909 by 2039. The structure is 65 ft (19.8 m) long and 41 ft wide. If it were closed, the detour would be 39.8 mi (64 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 | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Nd Highway 31 over Sweet Briar Creek built?
It was built in 1932, making it 93 years old in 2025. It was reconstructed in 1976.
What condition is Nd Highway 31 over Sweet Briar Creek 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 June 2023.
How much traffic does Nd Highway 31 over Sweet Briar Creek carry?
About 930 vehicles per day (2019 count), of which roughly 12% are trucks.
How long is Nd Highway 31 over Sweet Briar Creek?
The structure is 65 ft (19.8 m) long with a longest span of 60 ft (18.3 m) and a deck 41 ft wide.
Who owns Nd Highway 31 over Sweet Briar Creek?
It is owned by the State Highway Agency.