31490 477th Ave over Br Brule Ck
PoorUnion County, South Dakota · 4.3N JCT Sd 50 · Structure no. 000000064070179
- Built
- 1955
- 70 years old
- Condition
- Poor
- inspected August 2024
- Type
- Culvert
- Concrete Continuous
- Length
- 25 ft
- 3 main spans
- Daily traffic
- 300
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
31490 477th Ave over Br Brule Ck is a concrete continuous culvert carrying 31490 477th Ave over Br Brule Ck in Union County, South Dakota. It was built in 1955, so it is 70 years old, older than the South Dakota average of 48.9 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 300 vehicles a day, roughly 3% of them trucks, projected to reach 300 by 2032. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 11.8 mi (19 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 31490 477th Ave over Br Brule Ck built?
It was built in 1955, making it 70 years old in 2025.
What condition is 31490 477th Ave over Br Brule Ck in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2024.
How much traffic does 31490 477th Ave over Br Brule Ck carry?
About 300 vehicles per day (2022 count), of which roughly 3% are trucks.
How long is 31490 477th Ave over Br Brule Ck?
The structure is 25 ft (7.6 m) long with a longest span of 8 ft (2.4 m).
Who owns 31490 477th Ave over Br Brule Ck?
It is owned by the County Highway Agency.