FM over Maple River
GoodMonona County, Iowa · 084442403 · Structure no. 000000000250780
- Built
- 1957
- 68 years old, rebuilt 1994
- Condition
- Good
- inspected May 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 204 ft
- 3 main spans
- Daily traffic
- 188
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
FM over Maple River is a steel continuous stringer/multi-beam or girder carrying FM over Maple River in Monona County, Iowa. It was built in 1957 and reconstructed in 1994, 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 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 188 vehicles a day, roughly 4% of them trucks, projected to reach 188 by 2043. The structure is 204 ft (62.2 m) long and 33 ft wide. If it were closed, the detour would be 8.7 mi (14 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 Maple River built?
It was built in 1957, making it 68 years old in 2025. It was reconstructed in 1994.
What condition is FM over Maple 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 May 2023.
How much traffic does FM over Maple River carry?
About 188 vehicles per day (2022 count), of which roughly 4% are trucks.
How long is FM over Maple River?
The structure is 204 ft (62.2 m) long with a longest span of 78 ft (23.8 m) and a deck 33 ft wide.
Who owns FM over Maple River?
It is owned by the County Highway Agency.