290th Street over Silver Creek
FairPottawattamie County, Iowa · 074421204 · Structure no. 000000000284670
- Built
- 1964
- 61 years old
- Condition
- Fair
- inspected July 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 154 ft
- 3 main spans
- Daily traffic
- 757
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
290th Street over Silver Creek is a steel continuous stringer/multi-beam or girder carrying 290th Street over Silver Creek in Pottawattamie County, Iowa. It was built in 1964, so it is 61 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 757 vehicles a day, roughly 9% of them trucks, projected to reach 757 by 2043. The structure is 154 ft (46.9 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 290th Street over Silver Creek built?
It was built in 1964, making it 61 years old in 2025.
What condition is 290th Street over Silver 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 290th Street over Silver Creek carry?
About 757 vehicles per day (2022 count), of which roughly 9% are trucks.
How long is 290th Street over Silver Creek?
The structure is 154 ft (46.9 m) long with a longest span of 59 ft (18 m) and a deck 30 ft wide.
Who owns 290th Street over Silver Creek?
It is owned by the County Highway Agency.