FM over Grand River
PoorDecatur County, Iowa · 067261305 · Structure no. 000000000136480
- Built
- 1959
- 66 years old
- Condition
- Poor
- inspected November 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 302 ft
- 3 main spans
- Daily traffic
- 329
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
FM over Grand River is a steel continuous stringer/multi-beam or girder carrying FM over Grand River in Decatur County, Iowa. It was built in 1959, so it is 66 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 329 vehicles a day, roughly 27% of them trucks, projected to reach 329 by 2043. The structure is 302 ft (92.1 m) long and 27 ft wide. If it were closed, the detour would be 8.1 mi (13 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, 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 Grand River built?
It was built in 1959, making it 66 years old in 2025.
What condition is FM over Grand 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 2023.
How much traffic does FM over Grand River carry?
About 329 vehicles per day (2022 count), of which roughly 27% are trucks.
How long is FM over Grand River?
The structure is 302 ft (92.1 m) long with a longest span of 117 ft (35.7 m) and a deck 27 ft wide.
Who owns FM over Grand River?
It is owned by the County Highway Agency.