Ia 17 over Big Creek
FairBoone County, Iowa · 1.9 Miles S of JCT US 30 · Structure no. 000000000015330
- Built
- 1961
- 64 years old
- Condition
- Fair
- inspected January 2024
- Type
- Culvert
- Concrete Continuous
- Length
- 33 ft
- 3 main spans
- Daily traffic
- 5,300
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Ia 17 over Big Creek is a concrete continuous culvert carrying Ia 17 over Big Creek in Boone County, Iowa. It was built in 1961, so it is 64 years old, older 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 5,300 vehicles a day, roughly 11% of them trucks, projected to reach 5,300 by 2043. The structure is 33 ft (10.1 m) long. If it were closed, the detour would be 3.7 mi (6 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 | 8 Very Good | No problems noted. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Ia 17 over Big Creek built?
It was built in 1961, making it 64 years old in 2025.
What condition is Ia 17 over Big 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 January 2024.
How much traffic does Ia 17 over Big Creek carry?
About 5,300 vehicles per day (2023 count), of which roughly 11% are trucks.
How long is Ia 17 over Big Creek?
The structure is 33 ft (10.1 m) long with a longest span of 10 ft (3 m).
Who owns Ia 17 over Big Creek?
It is owned by the State Highway Agency.