308 Avenue over Okobojo Ck
FairSully County, South Dakota · 4E & 0.4S Agar · Structure no. 000000060350045
- Built
- 1974
- 51 years old
- Condition
- Fair
- inspected August 2023
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 50 ft
- 1 main span
- Daily traffic
- 25
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
308 Avenue over Okobojo Ck is a prestressed concrete tee beam carrying 308 Avenue over Okobojo Ck in Sully County, South Dakota. It was built in 1974, so it is 51 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 25 vehicles a day, roughly 2% of them trucks, projected to reach 25 by 2032. The structure is 50 ft (15.2 m) long and 27 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 308 Avenue over Okobojo Ck built?
It was built in 1974, making it 51 years old in 2025.
What condition is 308 Avenue over Okobojo Ck 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 August 2023.
How much traffic does 308 Avenue over Okobojo Ck carry?
About 25 vehicles per day (2022 count), of which roughly 2% are trucks.
How long is 308 Avenue over Okobojo Ck?
The structure is 50 ft (15.2 m) long with a longest span of 48 ft (14.6 m) and a deck 27 ft wide.
Who owns 308 Avenue over Okobojo Ck?
It is owned by the County Highway Agency.