305th ST over Troublesome Creek
GoodAudubon County, Iowa · 078340707 · Structure no. 000000000066411
- Built
- 2021
- 4 years old
- Condition
- Good
- inspected April 2023
- Type
- Slab
- Concrete Continuous
- Length
- 123 ft
- 3 main spans
- Daily traffic
- 51
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
305th ST over Troublesome Creek is a concrete continuous slab carrying 305th ST over Troublesome Creek in Audubon County, Iowa. It was built in 2021, so it is 4 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 9 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, roughly 18% of them trucks, projected to reach 51 by 2043. The structure is 123 ft (37.4 m) long and 27 ft wide. 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 |
|---|---|---|
| Deck | 9 Excellent | No problems noted. |
| Superstructure | 9 Excellent | No problems noted. |
| Substructure | 9 Excellent | 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 305th ST over Troublesome Creek built?
It was built in 2021, making it 4 years old in 2025.
What condition is 305th ST over Troublesome 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 April 2023.
How much traffic does 305th ST over Troublesome Creek carry?
About 51 vehicles per day (2022 count), of which roughly 18% are trucks.
How long is 305th ST over Troublesome Creek?
The structure is 123 ft (37.4 m) long with a longest span of 47 ft (14.3 m) and a deck 27 ft wide.
Who owns 305th ST over Troublesome Creek?
It is owned by the County Highway Agency.