FM over South Fork Middle River
FairGuthrie County, Iowa · 078323202 · Structure no. 000000000167181
- Built
- 1977
- 48 years old
- Condition
- Fair
- inspected November 2022
- Type
- Slab
- Concrete Continuous
- Length
- 128 ft
- 3 main spans
- Daily traffic
- 79
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
FM over South Fork Middle River is a concrete continuous slab carrying FM over South Fork Middle River in Guthrie County, Iowa. It was built in 1977, so it is 48 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 79 vehicles a day, roughly 25% of them trucks, projected to reach 79 by 2042. The structure is 128 ft (39 m) long and 32 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 South Fork Middle River built?
It was built in 1977, making it 48 years old in 2025.
What condition is FM over South Fork 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 November 2022.
How much traffic does FM over South Fork Middle River carry?
About 79 vehicles per day (2022 count), of which roughly 25% are trucks.
How long is FM over South Fork Middle River?
The structure is 128 ft (39 m) long with a longest span of 49 ft (14.9 m) and a deck 32 ft wide.
Who owns FM over South Fork Middle River?
It is owned by the County Highway Agency.