450th Street over Farm Creek
FairPottawattamie County, Iowa · 074392202 · Structure no. 000000000283801
- Built
- 1979
- 46 years old
- Condition
- Fair
- inspected July 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 142 ft
- 3 main spans
- Daily traffic
- 26
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
450th Street over Farm Creek is a prestressed concrete stringer/multi-beam or girder carrying 450th Street over Farm Creek in Pottawattamie County, Iowa. It was built in 1979, so it is 46 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 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 26 vehicles a day, projected to reach 26 by 2043. The structure is 142 ft (43.3 m) long and 32 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 450th Street over Farm Creek built?
It was built in 1979, making it 46 years old in 2025.
What condition is 450th Street over Farm 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 2023.
How much traffic does 450th Street over Farm Creek carry?
About 26 vehicles per day (2022 count).
How long is 450th Street over Farm Creek?
The structure is 142 ft (43.3 m) long with a longest span of 51 ft (15.5 m) and a deck 32 ft wide.
Who owns 450th Street over Farm Creek?
It is owned by the County Highway Agency.