FM over Nishnabotna River
GoodAudubon County, Iowa · 080353503 · Structure no. 000000000068541
- Built
- 1987
- 38 years old
- Condition
- Good
- inspected August 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 154 ft
- 3 main spans
- Daily traffic
- 100
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
FM over Nishnabotna River is a prestressed concrete stringer/multi-beam or girder carrying FM over Nishnabotna River in Audubon County, Iowa. It was built in 1987, so it is 38 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 100 vehicles a day, projected to reach 100 by 2044. The structure is 154 ft (47 m) long and 27 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was FM over Nishnabotna River built?
It was built in 1987, making it 38 years old in 2025.
What condition is FM over Nishnabotna 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 August 2024.
How much traffic does FM over Nishnabotna River carry?
About 100 vehicles per day (2022 count).
How long is FM over Nishnabotna River?
The structure is 154 ft (47 m) long with a longest span of 56 ft (17.2 m) and a deck 27 ft wide.
Who owns FM over Nishnabotna River?
It is owned by the County Highway Agency.