Walnut ST over Drainage
GoodBlack Hawk County, Iowa · Btwn 20th & 21st Streets · Structure no. 000000000001141
- Built
- 2019
- 6 years old
- Condition
- Good
- inspected March 2024
- Type
- Culvert
- Concrete Continuous
- Length
- 29 ft
- 2 main spans
- Daily traffic
- 794
- 2022 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Walnut ST over Drainage is a concrete continuous culvert carrying Walnut ST over Drainage in Black Hawk County, Iowa. It was built in 2019, so it is 6 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 794 vehicles a day, projected to reach 794 by 2044. The structure is 29 ft (8.7 m) long.
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 | 8 Very Good | No problems noted. |
| Culvert | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Walnut ST over Drainage built?
It was built in 2019, making it 6 years old in 2025.
What condition is Walnut ST over Drainage 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 Walnut ST over Drainage carry?
About 794 vehicles per day (2022 count).
How long is Walnut ST over Drainage?
The structure is 29 ft (8.7 m) long with a longest span of 14 ft (4.3 m).
Who owns Walnut ST over Drainage?
It is owned by the City or Municipal Highway Agency.