FM over Middle River
PoorPosted for loadMadison County, Iowa · 076262908 · Structure no. 000000000233740
- Built
- 1958
- 67 years old
- Condition
- Poor
- inspected August 2023
- Type
- Girder and Floorbeam System
- Concrete Continuous
- Length
- 252 ft
- 3 main spans
- Daily traffic
- 300
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
FM over Middle River is a concrete continuous girder and floorbeam system carrying FM over Middle River in Madison County, Iowa. It was built in 1958, so it is 67 years old, older than the Iowa average of 45.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.
It carries about 300 vehicles a day, roughly 12% of them trucks, projected to reach 300 by 2043. The structure is 252 ft (76.8 m) long and 23 ft wide. If it were closed, the detour would be 6.8 mi (11 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 4 Poor | Advanced section loss, deterioration, 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 1958, making it 67 years old in 2025.
What condition is FM over Middle River in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2023.
How much traffic does FM over Middle River carry?
About 300 vehicles per day (2022 count), of which roughly 12% are trucks.
How long is FM over Middle River?
The structure is 252 ft (76.8 m) long with a longest span of 100 ft (30.5 m) and a deck 23 ft wide.
Who owns FM over Middle River?
It is owned by the County Highway Agency.