400th Avenue over James River
FairBrown County, South Dakota · 0.7W & 4N of James · Structure no. 000000007240288
- Built
- 2014
- 11 years old
- Condition
- Fair
- inspected September 2023
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 120 ft
- 2 main spans
- Daily traffic
- 54
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
400th Avenue over James River is a prestressed concrete tee beam carrying 400th Avenue over James River in Brown County, South Dakota. It was built in 2014, so it is 11 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 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 54 vehicles a day, roughly 3% of them trucks, projected to reach 77 by 2032. The structure is 120 ft (36.6 m) long and 31 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 7 Good | Some minor problems. |
| 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 400th Avenue over James River built?
It was built in 2014, making it 11 years old in 2025.
What condition is 400th Avenue over James 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 September 2023.
How much traffic does 400th Avenue over James River carry?
About 54 vehicles per day (2022 count), of which roughly 3% are trucks.
How long is 400th Avenue over James River?
The structure is 120 ft (36.6 m) long with a longest span of 59 ft (18.1 m) and a deck 31 ft wide.
Who owns 400th Avenue over James River?
It is owned by the County Highway Agency.