402nd Avenue over North Br Twelve Mile Ck
FairDavison County, South Dakota · 9 W & 0.6 N Ethan · Structure no. 000000018080204
- Built
- 1970
- 55 years old
- Condition
- Fair
- inspected July 2024
- Type
- Channel Beam
- Concrete
- Length
- 33 ft
- 1 main span
- Daily traffic
- 64
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
402nd Avenue over North Br Twelve Mile Ck is a concrete channel beam carrying 402nd Avenue over North Br Twelve Mile Ck in Davison County, South Dakota. It was built in 1970, so it is 55 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 64 vehicles a day, roughly 2% of them trucks, projected to reach 64 by 2032. The structure is 33 ft (10.1 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 7 Good | Some minor problems. |
| 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 402nd Avenue over North Br Twelve Mile Ck built?
It was built in 1970, making it 55 years old in 2025.
What condition is 402nd Avenue over North Br Twelve Mile 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 July 2024.
How much traffic does 402nd Avenue over North Br Twelve Mile Ck carry?
About 64 vehicles per day (2022 count), of which roughly 2% are trucks.
How long is 402nd Avenue over North Br Twelve Mile Ck?
The structure is 33 ft (10.1 m) long with a longest span of 31 ft (9.4 m) and a deck 32 ft wide.
Who owns 402nd Avenue over North Br Twelve Mile Ck?
It is owned by the County Highway Agency.