123rd Street over Elm River
GoodBrown County, South Dakota · 3S & 1E of Westport · Structure no. 000000007120230
- Built
- 2019
- 6 years old
- Condition
- Good
- inspected September 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 239 ft
- 3 main spans
- Daily traffic
- 210
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
123rd Street over Elm River is a prestressed concrete stringer/multi-beam or girder carrying 123rd Street over Elm River in Brown County, South Dakota. It was built in 2019, so it is 6 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 210 vehicles a day, roughly 3% of them trucks, projected to reach 480 by 2032. The structure is 239 ft (72.8 m) long and 32 ft wide. If it were closed, the detour would be 5 mi (8 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 123rd Street over Elm River built?
It was built in 2019, making it 6 years old in 2025.
What condition is 123rd Street over Elm River in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2023.
How much traffic does 123rd Street over Elm River carry?
About 210 vehicles per day (2022 count), of which roughly 3% are trucks.
How long is 123rd Street over Elm River?
The structure is 239 ft (72.8 m) long with a longest span of 83 ft (25.3 m) and a deck 32 ft wide.
Who owns 123rd Street over Elm River?
It is owned by the County Highway Agency.