Main Street over Antelope Ck
FairTodd County, South Dakota · 0.1S Mission · Structure no. 000000061297061
- Built
- 1978
- 47 years old
- Condition
- Fair
- inspected June 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 72 ft
- 1 main span
- Daily traffic
- 1,400
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
Main Street over Antelope Ck is a prestressed concrete stringer/multi-beam or girder carrying Main Street over Antelope Ck in Todd County, South Dakota. It was built in 1978, so it is 47 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 1,400 vehicles a day, roughly 2% of them trucks, projected to reach 1,400 by 2032. The structure is 72 ft (21.9 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Main Street over Antelope Ck built?
It was built in 1978, making it 47 years old in 2025.
What condition is Main Street over Antelope 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 Main Street over Antelope Ck carry?
About 1,400 vehicles per day (2022 count), of which roughly 2% are trucks.
How long is Main Street over Antelope Ck?
The structure is 72 ft (21.9 m) long with a longest span of 70 ft (21.3 m) and a deck 44 ft wide.
Who owns Main Street over Antelope Ck?
It is owned by the County Highway Agency.