FM over Middle River
FairWarren County, Iowa · 077231505 · Structure no. 000000000335031
- Built
- 1994
- 31 years old
- Condition
- Fair
- inspected October 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 261 ft
- 3 main spans
- Daily traffic
- 409
- 2022 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 Warren County, Iowa. It was built in 1994, so it is 31 years old, younger 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 5 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 409 vehicles a day, projected to reach 409 by 2044. The structure is 261 ft (79.6 m) long and 33 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| 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 1994, making it 31 years old in 2025.
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 October 2024.
How much traffic does FM over Middle River carry?
About 409 vehicles per day (2022 count).
How long is FM over Middle River?
The structure is 261 ft (79.6 m) long with a longest span of 87 ft (26.5 m) and a deck 33 ft wide.
Who owns FM over Middle River?
It is owned by the County Highway Agency.