420th Avenue over Crow Creek
FairMarshall County, South Dakota · 3.6S 3.0W of Britton · Structure no. 000000046080136
- Built
- 1981
- 44 years old
- Condition
- Fair
- inspected June 2023
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 60 ft
- 1 main span
- Daily traffic
- 57
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
420th Avenue over Crow Creek is a prestressed concrete tee beam carrying 420th Avenue over Crow Creek in Marshall County, South Dakota. It was built in 1981, so it is 44 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 57 vehicles a day, roughly 3% of them trucks, projected to reach 57 by 2032. The structure is 60 ft (18.3 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 420th Avenue over Crow Creek built?
It was built in 1981, making it 44 years old in 2025.
What condition is 420th Avenue over Crow 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 June 2023.
How much traffic does 420th Avenue over Crow Creek carry?
About 57 vehicles per day (2022 count), of which roughly 3% are trucks.
How long is 420th Avenue over Crow Creek?
The structure is 60 ft (18.3 m) long with a longest span of 59 ft (18 m) and a deck 31 ft wide.
Who owns 420th Avenue over Crow Creek?
It is owned by the County Highway Agency.