FM over Middle River
PoorPosted for loadGuthrie County, Iowa · 079333604 · Structure no. 000000000168740
- Built
- 1969
- 56 years old
- Condition
- Poor
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 57 ft
- 1 main span
- Daily traffic
- 450
- 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 Guthrie County, Iowa. It was built in 1969, 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 poor condition with a lowest component rating of 3 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 other load-capacity restriction.
It carries about 450 vehicles a day, roughly 30% of them trucks, projected to reach 450 by 2044. The structure is 57 ft (17.4 m) long and 30 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 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
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.
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 November 2024.
How much traffic does FM over Middle River carry?
About 450 vehicles per day (2022 count), of which roughly 30% are trucks.
How long is FM over Middle River?
The structure is 57 ft (17.4 m) long with a longest span of 55 ft (16.8 m) and a deck 30 ft wide.
Who owns FM over Middle River?
It is owned by the County Highway Agency.