US 6 over Marble Creek
GoodIowa County, Iowa · 1.2 MI W of SR V52 Ladora · Structure no. 000000000029330
- Built
- 1955
- 70 years old
- Condition
- Good
- inspected December 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 37 ft
- 3 main spans
- Daily traffic
- 1,490
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
US 6 over Marble Creek is a concrete continuous culvert carrying US 6 over Marble Creek in Iowa County, Iowa. It was built in 1955, so it is 70 years old, older 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 1,490 vehicles a day, roughly 17% of them trucks, projected to reach 1,490 by 2042. The structure is 37 ft (11.4 m) long. If it were closed, the detour would be 21.7 mi (35 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 6 over Marble Creek built?
It was built in 1955, making it 70 years old in 2025.
What condition is US 6 over Marble 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 December 2023.
How much traffic does US 6 over Marble Creek carry?
About 1,490 vehicles per day (2022 count), of which roughly 17% are trucks.
How long is US 6 over Marble Creek?
The structure is 37 ft (11.4 m) long with a longest span of 11 ft (3.5 m).
Who owns US 6 over Marble Creek?
It is owned by the State Highway Agency.