170th ST over Boone River
GoodHancock County, Iowa · 095263103 · Structure no. 000000000173701
- Built
- 2021
- 4 years old
- Condition
- Good
- inspected March 2024
- Type
- Slab
- Concrete Continuous
- Length
- 91 ft
- 3 main spans
- Daily traffic
- 15
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
170th ST over Boone River is a concrete continuous slab carrying 170th ST over Boone River in Hancock County, Iowa. It was built in 2021, so it is 4 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 2044. The structure is 91 ft (27.7 m) long and 27 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 | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 170th ST over Boone River built?
It was built in 2021, making it 4 years old in 2025.
What condition is 170th ST over Boone 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 March 2024.
How much traffic does 170th ST over Boone River carry?
About 15 vehicles per day (2022 count).
How long is 170th ST over Boone River?
The structure is 91 ft (27.7 m) long with a longest span of 35 ft (10.7 m) and a deck 27 ft wide.
Who owns 170th ST over Boone River?
It is owned by the County Highway Agency.