490th over Wapsipinicon River
GoodMitchell County, Iowa · 100152001 · Structure no. 000000000248791
- Built
- 1997
- 28 years old
- Condition
- Good
- inspected December 2023
- Type
- Culvert
- Steel
- Length
- 71 ft
- 3 main spans
- Daily traffic
- 15
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
490th over Wapsipinicon River is a steel culvert carrying 490th over Wapsipinicon River in Mitchell County, Iowa. It was built in 1997, so it is 28 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 15 vehicles a day, projected to reach 15 by 2043. The structure is 71 ft (21.6 m) long. If it were closed, the detour would be 3.7 mi (6 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 |
|---|---|---|
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
| Culvert | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 490th over Wapsipinicon River built?
It was built in 1997, making it 28 years old in 2025.
What condition is 490th over Wapsipinicon River 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 December 2023.
How much traffic does 490th over Wapsipinicon River carry?
About 15 vehicles per day (2022 count).
How long is 490th over Wapsipinicon River?
The structure is 71 ft (21.6 m) long with a longest span of 19 ft (5.8 m).
Who owns 490th over Wapsipinicon River?
It is owned by the County Highway Agency.