117th Street over Sand Lake
FairBrown County, South Dakota · 5.5N & 0.3E of Columbia · Structure no. 000000007203170
- Built
- 1971
- 54 years old
- Condition
- Fair
- inspected September 2024
- Type
- Slab
- Concrete Continuous
- Length
- 140 ft
- 5 main spans
- Daily traffic
- 41
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
117th Street over Sand Lake is a concrete continuous slab carrying 117th Street over Sand Lake in Brown County, South Dakota. It was built in 1971, so it is 54 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 6 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 41 vehicles a day, roughly 2% of them trucks, projected to reach 41 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 117th Street over Sand Lake built?
It was built in 1971, making it 54 years old in 2025.
What condition is 117th Street over Sand Lake 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 117th Street over Sand Lake carry?
About 41 vehicles per day (2022 count), of which roughly 2% are trucks.
How long is 117th Street over Sand Lake?
The structure is 140 ft (42.7 m) long with a longest span of 30 ft (9.1 m) and a deck 32 ft wide.
Who owns 117th Street over Sand Lake?
It is owned by the County Highway Agency.