FM over Boyer River
PoorSac County, Iowa · 089370402 · Structure no. 000000000301590
- Built
- 1956
- 69 years old, rebuilt 1970
- Condition
- Poor
- inspected August 2024
- Type
- Slab
- Concrete Continuous
- Length
- 103 ft
- 3 main spans
- Daily traffic
- 848
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
FM over Boyer River is a concrete continuous slab carrying FM over Boyer River in Sac County, Iowa. It was built in 1956 and reconstructed in 1970, so it is 69 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.
It carries about 848 vehicles a day, roughly 11% of them trucks, projected to reach 848 by 2044. The structure is 103 ft (31.4 m) long and 36 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 Boyer River built?
It was built in 1956, making it 69 years old in 2025. It was reconstructed in 1970.
What condition is FM over Boyer 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 2024.
How much traffic does FM over Boyer River carry?
About 848 vehicles per day (2022 count), of which roughly 11% are trucks.
How long is FM over Boyer River?
The structure is 103 ft (31.4 m) long with a longest span of 39 ft (11.9 m) and a deck 36 ft wide.
Who owns FM over Boyer River?
It is owned by the County Highway Agency.