463rd Avenue over Trib. to Big Sioux River
FairHamlin County, South Dakota · 2.6N of Dempster · Structure no. 000000029270094
- Built
- 1926
- 99 years old, rebuilt 1973
- Condition
- Fair
- inspected July 2024
- Type
- Culvert
- Concrete Continuous
- Length
- 23 ft
- 2 main spans
- Daily traffic
- 125
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
463rd Avenue over Trib. to Big Sioux River is a concrete continuous culvert carrying 463rd Avenue over Trib. to Big Sioux River in Hamlin County, South Dakota. It was built in 1926 and reconstructed in 1973, so it is 99 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 fair condition with a lowest component rating of 5 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 125 vehicles a day, roughly 2% of them trucks, projected to reach 125 by 2032. The structure is 23 ft (6.9 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Culvert | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 463rd Avenue over Trib. to Big Sioux River built?
It was built in 1926, making it 99 years old in 2025. It was reconstructed in 1973.
What condition is 463rd Avenue over Trib. to Big 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 July 2024.
How much traffic does 463rd Avenue over Trib. to Big Sioux River carry?
About 125 vehicles per day (2022 count), of which roughly 2% are trucks.
How long is 463rd Avenue over Trib. to Big Sioux River?
The structure is 23 ft (6.9 m) long with a longest span of 10 ft (3 m) and a deck 32 ft wide.
Who owns 463rd Avenue over Trib. to Big Sioux River?
It is owned by the County Highway Agency.