FM over Overflow on Boyer River
PoorSac County, Iowa · 089372201 · Structure no. 000000000301800
- Built
- 1964
- 61 years old
- Condition
- Poor
- inspected August 2022
- Type
- Slab
- Concrete Continuous
- Length
- 78 ft
- 3 main spans
- Daily traffic
- 249
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
FM over Overflow on Boyer River is a concrete continuous slab carrying FM over Overflow on Boyer River in Sac County, Iowa. It was built in 1964, so it is 61 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 249 vehicles a day, roughly 41% of them trucks, projected to reach 249 by 2043. The structure is 78 ft (23.8 m) long and 30 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| 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 Overflow on Boyer River built?
It was built in 1964, making it 61 years old in 2025.
What condition is FM over Overflow on 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 2022.
How much traffic does FM over Overflow on Boyer River carry?
About 249 vehicles per day (2022 count), of which roughly 41% are trucks.
How long is FM over Overflow on Boyer River?
The structure is 78 ft (23.8 m) long with a longest span of 29 ft (8.8 m) and a deck 30 ft wide.
Who owns FM over Overflow on Boyer River?
It is owned by the County Highway Agency.