284th Street over Silver Creek Branch
FairMills County, Iowa · 072420202 · Structure no. 000000000036080
- Built
- 1959
- 66 years old
- Condition
- Fair
- inspected March 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 29 ft
- 2 main spans
- Daily traffic
- 568
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
284th Street over Silver Creek Branch is a concrete continuous culvert carrying 284th Street over Silver Creek Branch in Mills County, Iowa. It was built in 1959, so it is 66 years old, older than the Iowa average of 45.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 568 vehicles a day, roughly 13% of them trucks, projected to reach 568 by 2043. The structure is 29 ft (8.8 m) long. If it were closed, the detour would be 8.1 mi (13 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 |
|---|---|---|
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Culvert | 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 284th Street over Silver Creek Branch built?
It was built in 1959, making it 66 years old in 2025.
What condition is 284th Street over Silver Creek Branch 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 March 2023.
How much traffic does 284th Street over Silver Creek Branch carry?
About 568 vehicles per day (2022 count), of which roughly 13% are trucks.
How long is 284th Street over Silver Creek Branch?
The structure is 29 ft (8.8 m) long with a longest span of 14 ft (4.3 m).
Who owns 284th Street over Silver Creek Branch?
It is owned by the County Highway Agency.