FM over Linn CR
PoorPosted for loadMarshall County, Iowa · 083180902 · Structure no. 000000000242560
- Built
- 1956
- 69 years old, rebuilt 2001
- Condition
- Poor
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 110 ft
- 3 main spans
- Daily traffic
- 369
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
FM over Linn CR is a steel stringer/multi-beam or girder carrying FM over Linn CR in Marshall County, Iowa. It was built in 1956 and reconstructed in 2001, 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. Its operating status is: posted for other load-capacity restriction.
It carries about 369 vehicles a day, roughly 20% of them trucks, projected to reach 369 by 2044. The structure is 110 ft (33.5 m) long and 19 ft wide. If it were closed, the detour would be 5 mi (8 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was FM over Linn CR built?
It was built in 1956, making it 69 years old in 2025. It was reconstructed in 2001.
What condition is FM over Linn CR 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 2024.
How much traffic does FM over Linn CR carry?
About 369 vehicles per day (2022 count), of which roughly 20% are trucks.
How long is FM over Linn CR?
The structure is 110 ft (33.5 m) long with a longest span of 42 ft (12.8 m) and a deck 19 ft wide.
Who owns FM over Linn CR?
It is owned by the County Highway Agency.