Ia 3 over Big Whiskey Slough
GoodPlymouth County, Iowa · 0.6 MI W of JCT SR L22 · Structure no. 000000000039891
- Built
- 1999
- 26 years old
- Condition
- Good
- inspected December 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 39 ft
- 3 main spans
- Daily traffic
- 2,140
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Ia 3 over Big Whiskey Slough is a concrete continuous culvert carrying Ia 3 over Big Whiskey Slough in Plymouth County, Iowa. It was built in 1999, so it is 26 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 2,140 vehicles a day, roughly 27% of them trucks, projected to reach 2,140 by 2042. The structure is 39 ft (12 m) long. If it were closed, the detour would be 8.1 mi (13 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 Ia 3 over Big Whiskey Slough built?
It was built in 1999, making it 26 years old in 2025.
What condition is Ia 3 over Big Whiskey Slough 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 December 2023.
How much traffic does Ia 3 over Big Whiskey Slough carry?
About 2,140 vehicles per day (2022 count), of which roughly 27% are trucks.
How long is Ia 3 over Big Whiskey Slough?
The structure is 39 ft (12 m) long with a longest span of 12 ft (3.7 m).
Who owns Ia 3 over Big Whiskey Slough?
It is owned by the State Highway Agency.