US 218 over Big Slough Creek
GoodWashington County, Iowa · 3.8 Mi. S of Jct. Ia 92 · Structure no. 000000000606880
- Built
- 1997
- 28 years old
- Condition
- Good
- inspected February 2024
- Type
- Culvert
- Concrete Continuous
- Length
- 37 ft
- 3 main spans
- Daily traffic
- 12,400
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
US 218 over Big Slough Creek is a concrete continuous culvert carrying US 218 over Big Slough Creek in Washington County, Iowa. It was built in 1997, so it is 28 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 12,400 vehicles a day, roughly 20% of them trucks, projected to reach 12,400 by 2044. The structure is 37 ft (11.3 m) long. If it were closed, the detour would be 6.8 mi (11 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 218 over Big Slough Creek built?
It was built in 1997, making it 28 years old in 2025.
What condition is US 218 over Big Slough 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 February 2024.
How much traffic does US 218 over Big Slough Creek carry?
About 12,400 vehicles per day (2022 count), of which roughly 20% are trucks.
How long is US 218 over Big Slough Creek?
The structure is 37 ft (11.3 m) long with a longest span of 12 ft (3.7 m).
Who owns US 218 over Big Slough Creek?
It is owned by the State Highway Agency.