FM over Bayou-Nishnabotna
GoodMontgomery County, Iowa · 071383101 · Structure no. 000000000002414
- Built
- 1999
- 26 years old
- Condition
- Good
- inspected May 2023
- Type
- Slab
- Concrete Continuous
- Length
- 153 ft
- 3 main spans
- Daily traffic
- 133
- 2021 count
- Owner
- County
- County Highway Agency
About this bridge
FM over Bayou-Nishnabotna is a concrete continuous slab carrying FM over Bayou-Nishnabotna in Montgomery County, Iowa. It was built in 1999, so it is 26 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 133 vehicles a day, roughly 14% of them trucks, projected to reach 133 by 2043. The structure is 153 ft (46.6 m) long and 33 ft wide. If it were closed, the detour would be 11.2 mi (18 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was FM over Bayou-Nishnabotna built?
It was built in 1999, making it 26 years old in 2025.
What condition is FM over Bayou-Nishnabotna 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 May 2023.
How much traffic does FM over Bayou-Nishnabotna carry?
About 133 vehicles per day (2021 count), of which roughly 14% are trucks.
How long is FM over Bayou-Nishnabotna?
The structure is 153 ft (46.6 m) long with a longest span of 58 ft (17.7 m) and a deck 33 ft wide.
Who owns FM over Bayou-Nishnabotna?
It is owned by the County Highway Agency.