100th Street over James River
GoodBrown County, South Dakota · 4N & 1.4W of Hecla · Structure no. 000000007266000
- Built
- 1971
- 54 years old
- Condition
- Good
- inspected September 2023
- Type
- Slab
- Concrete Continuous
- Length
- 210 ft
- 5 main spans
- Daily traffic
- 100
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
100th Street over James River is a concrete continuous slab carrying 100th Street over James River 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 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 100 vehicles a day, roughly 8% of them trucks, projected to reach 100 by 2033. The structure is 210 ft (64 m) long and 34 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 100th Street over James River built?
It was built in 1971, making it 54 years old in 2025.
What condition is 100th Street over James 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 100th Street over James River carry?
About 100 vehicles per day (2022 count), of which roughly 8% are trucks.
How long is 100th Street over James River?
The structure is 210 ft (64 m) long with a longest span of 45 ft (13.7 m) and a deck 34 ft wide.
Who owns 100th Street over James River?
It is owned by the County Highway Agency.