405th Avenue over Mud Creek
FairBrown County, South Dakota · 4.1S & 1W of Groton · Structure no. 000000007290371
- Built
- 1991
- 34 years old
- Condition
- Fair
- inspected July 2024
- Type
- Slab
- Concrete Continuous
- Length
- 68 ft
- 3 main spans
- Daily traffic
- 98
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
405th Avenue over Mud Creek is a concrete continuous slab carrying 405th Avenue over Mud Creek in Brown County, South Dakota. It was built in 1991, so it is 34 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 98 vehicles a day, roughly 2% of them trucks, projected to reach 98 by 2032. The structure is 68 ft (20.7 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 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 405th Avenue over Mud Creek built?
It was built in 1991, making it 34 years old in 2025.
What condition is 405th Avenue over Mud Creek 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 405th Avenue over Mud Creek carry?
About 98 vehicles per day (2022 count), of which roughly 2% are trucks.
How long is 405th Avenue over Mud Creek?
The structure is 68 ft (20.7 m) long with a longest span of 26 ft (7.8 m) and a deck 32 ft wide.
Who owns 405th Avenue over Mud Creek?
It is owned by the County Highway Agency.