L66 340th ST over Iais RR
GoodPottawattamie County, Iowa · 076412302 · Structure no. 000000000288451
- Built
- 2015
- 10 years old
- Condition
- Good
- inspected June 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 174 ft
- 3 main spans
- Daily traffic
- 270
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
L66 340th ST over Iais RR is a prestressed concrete stringer/multi-beam or girder carrying L66 340th ST over Iais RR in Pottawattamie County, Iowa. It was built in 2015, so it is 10 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 270 vehicles a day, roughly 20% of them trucks, projected to reach 270 by 2043. The structure is 174 ft (53.1 m) long and 33 ft wide.
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 | 7 Good | Some minor problems. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was L66 340th ST over Iais RR built?
It was built in 2015, making it 10 years old in 2025.
What condition is L66 340th ST over Iais RR 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 June 2023.
How much traffic does L66 340th ST over Iais RR carry?
About 270 vehicles per day (2022 count), of which roughly 20% are trucks.
How long is L66 340th ST over Iais RR?
The structure is 174 ft (53.1 m) long with a longest span of 65 ft (19.8 m) and a deck 33 ft wide.
Who owns L66 340th ST over Iais RR?
It is owned by the County Highway Agency.