320th over Rock Falls Creek
GoodCerro Gordo County, Iowa · 097191601 · Structure no. 000000000106521
- Built
- 2008
- 17 years old
- Condition
- Good
- inspected January 2024
- Type
- Slab
- Concrete Continuous
- Length
- 123 ft
- 3 main spans
- Daily traffic
- 51
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
320th over Rock Falls Creek is a concrete continuous slab carrying 320th over Rock Falls Creek in Cerro Gordo County, Iowa. It was built in 2008, so it is 17 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 51 vehicles a day, projected to reach 51 by 2044. The structure is 123 ft (37.5 m) long and 25 ft wide. If it were closed, the detour would be 3.7 mi (6 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 |
|---|---|---|
| Deck | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 9 Excellent | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 320th over Rock Falls Creek built?
It was built in 2008, making it 17 years old in 2025.
What condition is 320th over Rock Falls 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 January 2024.
How much traffic does 320th over Rock Falls Creek carry?
About 51 vehicles per day (2022 count).
How long is 320th over Rock Falls Creek?
The structure is 123 ft (37.5 m) long with a longest span of 47 ft (14.3 m) and a deck 25 ft wide.
Who owns 320th over Rock Falls Creek?
It is owned by the County Highway Agency.