230th ST over Black Hawk Creek
GoodGrundy County, Iowa · 087151201 · Structure no. 000000000163931
- Built
- 2012
- 13 years old
- Condition
- Good
- inspected April 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 304 ft
- 3 main spans
- Daily traffic
- 33
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
230th ST over Black Hawk Creek is a prestressed concrete stringer/multi-beam or girder carrying 230th ST over Black Hawk Creek in Grundy County, Iowa. It was built in 2012, so it is 13 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 33 vehicles a day, projected to reach 33 by 2044. The structure is 304 ft (92.7 m) long and 32 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 | 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 230th ST over Black Hawk Creek built?
It was built in 2012, making it 13 years old in 2025.
What condition is 230th ST over Black Hawk Creek 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 2024.
How much traffic does 230th ST over Black Hawk Creek carry?
About 33 vehicles per day (2022 count).
How long is 230th ST over Black Hawk Creek?
The structure is 304 ft (92.7 m) long with a longest span of 102 ft (31.1 m) and a deck 32 ft wide.
Who owns 230th ST over Black Hawk Creek?
It is owned by the County Highway Agency.