46450 309th St. over Vermillion Rv
FairClay County, South Dakota · 3S & 0.5W Hub City · Structure no. 000000014125120
- Built
- 1981
- 44 years old
- Condition
- Fair
- inspected September 2024
- Type
- Slab
- Concrete Continuous
- Length
- 140 ft
- 3 main spans
- Daily traffic
- 97
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
46450 309th St. over Vermillion Rv is a concrete continuous slab carrying 46450 309th St. over Vermillion Rv in Clay County, South Dakota. It was built in 1981, so it is 44 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 97 vehicles a day, roughly 2% of them trucks, projected to reach 97 by 2032. The structure is 140 ft (42.7 m) long and 32 ft wide. If it were closed, the detour would be 6.2 mi (10 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 46450 309th St. over Vermillion Rv built?
It was built in 1981, making it 44 years old in 2025.
What condition is 46450 309th St. over Vermillion Rv 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 September 2024.
How much traffic does 46450 309th St. over Vermillion Rv carry?
About 97 vehicles per day (2022 count), of which roughly 2% are trucks.
How long is 46450 309th St. over Vermillion Rv?
The structure is 140 ft (42.7 m) long with a longest span of 56 ft (17.1 m) and a deck 32 ft wide.
Who owns 46450 309th St. over Vermillion Rv?
It is owned by the County Highway Agency.