FM over Middle River
FairAdair County, Iowa · 076302104 · Structure no. 000000000056570
- Built
- 1969
- 56 years old, rebuilt 2016
- Condition
- Fair
- inspected May 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 207 ft
- 3 main spans
- Daily traffic
- 1,047
- 2021 count
- Owner
- County
- County Highway Agency
About this bridge
FM over Middle River is a prestressed concrete stringer/multi-beam or girder carrying FM over Middle River in Adair County, Iowa. It was built in 1969 and reconstructed in 2016, so it is 56 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 1,047 vehicles a day, roughly 13% of them trucks, projected to reach 1,047 by 2043. The structure is 207 ft (63.1 m) long and 30 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 | 8 Very Good | No problems noted. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was FM over Middle River built?
It was built in 1969, making it 56 years old in 2025. It was reconstructed in 2016.
What condition is FM over Middle 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 May 2023.
How much traffic does FM over Middle River carry?
About 1,047 vehicles per day (2021 count), of which roughly 13% are trucks.
How long is FM over Middle River?
The structure is 207 ft (63.1 m) long with a longest span of 68 ft (20.7 m) and a deck 30 ft wide.
Who owns FM over Middle River?
It is owned by the County Highway Agency.