460th Street over Graybill Creek
FairPottawattamie County, Iowa · 076391402 · Structure no. 000000000287541
- Built
- 1984
- 41 years old
- Condition
- Fair
- inspected May 2023
- Type
- Culvert
- Concrete
- Length
- 28 ft
- 2 main spans
- Daily traffic
- 50
- 2021 count
- Owner
- County
- County Highway Agency
About this bridge
460th Street over Graybill Creek is a concrete culvert carrying 460th Street over Graybill Creek in Pottawattamie County, Iowa. It was built in 1984, so it is 41 years old, younger 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 50 vehicles a day, projected to reach 50 by 2043. The structure is 28 ft (8.5 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 |
|---|---|---|
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 460th Street over Graybill Creek built?
It was built in 1984, making it 41 years old in 2025.
What condition is 460th Street over Graybill 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 May 2023.
How much traffic does 460th Street over Graybill Creek carry?
About 50 vehicles per day (2021 count).
How long is 460th Street over Graybill Creek?
The structure is 28 ft (8.5 m) long with a longest span of 14 ft (4.3 m) and a deck 32 ft wide.
Who owns 460th Street over Graybill Creek?
It is owned by the County Highway Agency.