483 Avenue over Cobb Ck
FairDeuel County, South Dakota · 5.5N Astoria · Structure no. 000000020170235
- Built
- 1961
- 64 years old
- Condition
- Fair
- inspected June 2023
- Type
- Slab
- Concrete Continuous
- Length
- 117 ft
- 5 main spans
- Daily traffic
- 179
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
483 Avenue over Cobb Ck is a concrete continuous slab carrying 483 Avenue over Cobb Ck in Deuel County, South Dakota. It was built in 1961, so it is 64 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 179 vehicles a day, roughly 3% of them trucks, projected to reach 179 by 2026. The structure is 117 ft (35.7 m) long and 28 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 483 Avenue over Cobb Ck built?
It was built in 1961, making it 64 years old in 2025.
What condition is 483 Avenue over Cobb 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 June 2023.
How much traffic does 483 Avenue over Cobb Ck carry?
About 179 vehicles per day (2022 count), of which roughly 3% are trucks.
How long is 483 Avenue over Cobb Ck?
The structure is 117 ft (35.7 m) long with a longest span of 25 ft (7.6 m) and a deck 28 ft wide.
Who owns 483 Avenue over Cobb Ck?
It is owned by the County Highway Agency.