463rd Avenue over Big Sioux River
FairPosted for loadHamlin County, South Dakota · 2W & 1.6N of Estelline · Structure no. 000000029270144
- Built
- 1953
- 72 years old
- Condition
- Fair
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 181 ft
- 4 main spans
- Daily traffic
- 119
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
463rd Avenue over Big Sioux River is a steel stringer/multi-beam or girder carrying 463rd Avenue over Big Sioux River in Hamlin County, South Dakota. It was built in 1953, so it is 72 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. Its operating status is: posted for load restriction.
It carries about 119 vehicles a day, roughly 2% of them trucks, projected to reach 119 by 2032. The structure is 181 ft (55.3 m) long and 26 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 463rd Avenue over Big Sioux River built?
It was built in 1953, making it 72 years old in 2025.
What condition is 463rd Avenue over 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 Big Sioux River carry?
About 119 vehicles per day (2022 count), of which roughly 2% are trucks.
How long is 463rd Avenue over Big Sioux River?
The structure is 181 ft (55.3 m) long with a longest span of 49 ft (14.9 m) and a deck 26 ft wide.
Who owns 463rd Avenue over Big Sioux River?
It is owned by the County Highway Agency.