340th over Shell Rock River
GoodCerro Gordo County, Iowa · 000000000 · Structure no. 000000000106471
- Built
- 2010
- 15 years old
- Condition
- Good
- inspected January 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 167 ft
- 3 main spans
- Daily traffic
- 82
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
340th over Shell Rock River is a prestressed concrete stringer/multi-beam or girder carrying 340th over Shell Rock River in Cerro Gordo County, Iowa. It was built in 2010, so it is 15 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 82 vehicles a day, projected to reach 82 by 2044. The structure is 167 ft (50.9 m) long and 27 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 340th over Shell Rock River built?
It was built in 2010, making it 15 years old in 2025.
What condition is 340th over Shell Rock River 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 340th over Shell Rock River carry?
About 82 vehicles per day (2022 count).
How long is 340th over Shell Rock River?
The structure is 167 ft (50.9 m) long with a longest span of 61 ft (18.5 m) and a deck 27 ft wide.
Who owns 340th over Shell Rock River?
It is owned by the County Highway Agency.