FM over Des Moines River
PoorClosed to trafficBoone County, Iowa · 084272705 · Structure no. 000000000077850
- Built
- 1909
- 116 years old
- Condition
- Poor
- inspected May 2024
- Type
- Truss - Thru
- Steel
- Length
- 703 ft
- 4 main spans
- Daily traffic
- 80
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
FM over Des Moines River is a steel truss - thru carrying FM over Des Moines River in Boone County, Iowa. It was built in 1909, so it is 116 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 0 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: closed to all traffic.
It carries about 80 vehicles a day, projected to reach 80 by 2044. The structure is 703 ft (214.3 m) long and 16 ft wide. If it were closed, the detour would be 8.7 mi (14 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 | 0 Failed | Out of service and beyond corrective action. |
| Superstructure | 0 Failed | Out of service and beyond corrective action. |
| Substructure | 0 Failed | Out of service and beyond corrective action. |
| 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 Des Moines River built?
It was built in 1909, making it 116 years old in 2025.
What condition is FM over Des Moines 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 May 2024.
How much traffic does FM over Des Moines River carry?
About 80 vehicles per day (2022 count).
How long is FM over Des Moines River?
The structure is 703 ft (214.3 m) long with a longest span of 200 ft (61 m) and a deck 16 ft wide.
Who owns FM over Des Moines River?
It is owned by the County Highway Agency.