FM-450th Street over Greybill Creek
GoodPottawattamie County, Iowa · 075390302 · Structure no. 000000000285331
- Built
- 1974
- 51 years old
- Condition
- Good
- inspected July 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 130 ft
- 3 main spans
- Daily traffic
- 60
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
FM-450th Street over Greybill Creek is a steel continuous stringer/multi-beam or girder carrying FM-450th Street over Greybill Creek in Pottawattamie County, Iowa. It was built in 1974, so it is 51 years old, older than the Iowa average of 45.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 60 vehicles a day, projected to reach 60 by 2043. The structure is 130 ft (39.6 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
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was FM-450th Street over Greybill Creek built?
It was built in 1974, making it 51 years old in 2025.
What condition is FM-450th Street over Greybill Creek in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2023.
How much traffic does FM-450th Street over Greybill Creek carry?
About 60 vehicles per day (2022 count).
How long is FM-450th Street over Greybill Creek?
The structure is 130 ft (39.6 m) long with a longest span of 49 ft (14.9 m) and a deck 32 ft wide.
Who owns FM-450th Street over Greybill Creek?
It is owned by the County Highway Agency.