109th Street over Elm River
FairBrown County, South Dakota · 1.7S & 6.7W of Frederick · Structure no. 000000007036090
- Built
- 1925
- 100 years old, rebuilt 1975
- Condition
- Fair
- inspected July 2024
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 61 ft
- 2 main spans
- Daily traffic
- 27
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
109th Street over Elm River is a prestressed concrete tee beam carrying 109th Street over Elm River in Brown County, South Dakota. It was built in 1925 and reconstructed in 1975, so it is 100 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 27 vehicles a day, roughly 2% of them trucks, projected to reach 27 by 2032. The structure is 61 ft (18.6 m) long and 31 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 | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 109th Street over Elm River built?
It was built in 1925, making it 100 years old in 2025. It was reconstructed in 1975.
What condition is 109th Street over Elm River 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 109th Street over Elm River carry?
About 27 vehicles per day (2022 count), of which roughly 2% are trucks.
How long is 109th Street over Elm River?
The structure is 61 ft (18.6 m) long with a longest span of 30 ft (9.1 m) and a deck 31 ft wide.
Who owns 109th Street over Elm River?
It is owned by the County Highway Agency.