254th ST HWY 122 over Big Sioux River
FairMinnehaha County, South Dakota · 4S & 0.3W Baltic · Structure no. 000000050197100
- Built
- 1983
- 42 years old
- Condition
- Fair
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 212 ft
- 3 main spans
- Daily traffic
- 912
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
254th ST HWY 122 over Big Sioux River is a steel continuous stringer/multi-beam or girder carrying 254th ST HWY 122 over Big Sioux River in Minnehaha County, South Dakota. It was built in 1983, so it is 42 years old, younger 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 912 vehicles a day, roughly 2% of them trucks, projected to reach 1,058 by 2038. The structure is 212 ft (64.6 m) long and 35 ft wide. If it were closed, the detour would be 8.1 mi (13 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 254th ST HWY 122 over Big Sioux River built?
It was built in 1983, making it 42 years old in 2025.
What condition is 254th ST HWY 122 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 254th ST HWY 122 over Big Sioux River carry?
About 912 vehicles per day (2023 count), of which roughly 2% are trucks.
How long is 254th ST HWY 122 over Big Sioux River?
The structure is 212 ft (64.6 m) long with a longest span of 82 ft (25 m) and a deck 35 ft wide.
Who owns 254th ST HWY 122 over Big Sioux River?
It is owned by the County Highway Agency.