Redwood Ave over Six Mile Creek
FairHarrison County, Iowa · 079421108 · Structure no. 000000000178031
- Built
- 1992
- 33 years old
- Condition
- Fair
- inspected December 2024
- Type
- Culvert
- Concrete Continuous
- Length
- 21 ft
- 2 main spans
- Daily traffic
- 45
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
Redwood Ave over Six Mile Creek is a concrete continuous culvert carrying Redwood Ave over Six Mile Creek in Harrison County, Iowa. It was built in 1992, so it is 33 years old, younger than the Iowa average of 45.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 45 vehicles a day, projected to reach 45 by 2044. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 5 mi (8 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Channel and channel protection | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Redwood Ave over Six Mile Creek built?
It was built in 1992, making it 33 years old in 2025.
What condition is Redwood Ave over Six Mile Creek in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in December 2024.
How much traffic does Redwood Ave over Six Mile Creek carry?
About 45 vehicles per day (2022 count).
How long is Redwood Ave over Six Mile Creek?
The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).
Who owns Redwood Ave over Six Mile Creek?
It is owned by the County Highway Agency.