170th Street over Stream
GoodGuthrie County, Iowa · 080320901 · Structure no. 000000000364920
- Built
- 2004
- 21 years old
- Condition
- Good
- inspected November 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 20 ft
- 2 main spans
- Daily traffic
- 20
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
170th Street over Stream is a concrete continuous culvert carrying 170th Street over Stream in Guthrie County, Iowa. It was built in 2004, so it is 21 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 20 vehicles a day, projected to reach 20 by 2043. The structure is 20 ft (6.1 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 | 7 Good | Some minor problems. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 170th Street over Stream built?
It was built in 2004, making it 21 years old in 2025.
What condition is 170th Street over Stream 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 November 2023.
How much traffic does 170th Street over Stream carry?
About 20 vehicles per day (2022 count).
How long is 170th Street over Stream?
The structure is 20 ft (6.1 m) long with a longest span of 10 ft (3 m).
Who owns 170th Street over Stream?
It is owned by the County Highway Agency.