FM over W Nishnabotna River
FairShelby County, Iowa · 081370202 · Structure no. 000000000306950
- Built
- 1957
- 68 years old
- Condition
- Fair
- inspected March 2024
- Type
- Box Beam or Girders - Multiple
- Concrete
- Length
- 144 ft
- 3 main spans
- Daily traffic
- 71
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
FM over W Nishnabotna River is a concrete box beam or girders - multiple carrying FM over W Nishnabotna River in Shelby County, Iowa. It was built in 1957, so it is 68 years old, older than the Iowa average of 45.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 71 vehicles a day, roughly 15% of them trucks, projected to reach 71 by 2044. The structure is 144 ft (43.9 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was FM over W Nishnabotna River built?
It was built in 1957, making it 68 years old in 2025.
What condition is FM over W Nishnabotna River in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2024.
How much traffic does FM over W Nishnabotna River carry?
About 71 vehicles per day (2022 count), of which roughly 15% are trucks.
How long is FM over W Nishnabotna River?
The structure is 144 ft (43.9 m) long with a longest span of 55 ft (16.8 m) and a deck 26 ft wide.
Who owns FM over W Nishnabotna River?
It is owned by the County Highway Agency.