21st Street SW over Square Butte Creek
GoodOliver County, North Dakota · 1 West of Hannover · Structure no. 000000033116130
- Built
- 1984
- 41 years old
- Condition
- Good
- inspected July 2024
- Type
- Box Beam or Girders - Single or Spread
- Prestressed Concrete
- Length
- 52 ft
- 1 main span
- Daily traffic
- 200
- 2018 count
- Owner
- County
- County Highway Agency
About this bridge
21st Street SW over Square Butte Creek is a prestressed concrete box beam or girders - single or spread carrying 21st Street SW over Square Butte Creek in Oliver County, North Dakota. It was built in 1984, so it is 41 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 200 vehicles a day, roughly 10% of them trucks, projected to reach 300 by 2038. The structure is 52 ft (15.8 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 21st Street SW over Square Butte Creek built?
It was built in 1984, making it 41 years old in 2025.
What condition is 21st Street SW over Square Butte Creek in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2024.
How much traffic does 21st Street SW over Square Butte Creek carry?
About 200 vehicles per day (2018 count), of which roughly 10% are trucks.
How long is 21st Street SW over Square Butte Creek?
The structure is 52 ft (15.8 m) long with a longest span of 47 ft (14.3 m) and a deck 31 ft wide.
Who owns 21st Street SW over Square Butte Creek?
It is owned by the County Highway Agency.