170th ST over Wapsipinicon River
GoodHoward County, Iowa · 098143101 · Structure no. 000000000182751
- Built
- 1988
- 37 years old
- Condition
- Good
- inspected April 2023
- Type
- Slab
- Concrete Continuous
- Length
- 174 ft
- 4 main spans
- Daily traffic
- 62
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
170th ST over Wapsipinicon River is a concrete continuous slab carrying 170th ST over Wapsipinicon River in Howard County, Iowa. It was built in 1988, so it is 37 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 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 62 vehicles a day, projected to reach 62 by 2043. The structure is 174 ft (53 m) long and 27 ft wide. 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 |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| 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 170th ST over Wapsipinicon River built?
It was built in 1988, making it 37 years old in 2025.
What condition is 170th ST 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 April 2023.
How much traffic does 170th ST over Wapsipinicon River carry?
About 62 vehicles per day (2022 count).
How long is 170th ST over Wapsipinicon River?
The structure is 174 ft (53 m) long with a longest span of 46 ft (14 m) and a deck 27 ft wide.
Who owns 170th ST over Wapsipinicon River?
It is owned by the County Highway Agency.