G46 Walnut Trail over Drainage
GoodMadison County, Iowa · 075261203 · Structure no. 000000000232841
- Built
- 2019
- 6 years old
- Condition
- Good
- inspected August 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 53 ft
- 1 main span
- Daily traffic
- 45
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
G46 Walnut Trail over Drainage is a prestressed concrete box beam or girders - multiple carrying G46 Walnut Trail over Drainage in Madison 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 45 vehicles a day, projected to reach 45 by 2043. The structure is 53 ft (16.2 m) long and 24 ft wide. If it were closed, the detour would be 9.9 mi (16 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was G46 Walnut Trail over Drainage built?
It was built in 2019, making it 6 years old in 2025.
What condition is G46 Walnut Trail 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 August 2023.
How much traffic does G46 Walnut Trail over Drainage carry?
About 45 vehicles per day (2022 count).
How long is G46 Walnut Trail over Drainage?
The structure is 53 ft (16.2 m) long with a longest span of 50 ft (15.2 m) and a deck 24 ft wide.
Who owns G46 Walnut Trail over Drainage?
It is owned by the County Highway Agency.