Irr-Fm over Iowa River Overflow
FairTama County, Iowa · 083152909 · Structure no. 000000000318200
- Built
- 1972
- 53 years old, rebuilt 1985
- Condition
- Fair
- inspected October 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 102 ft
- 3 main spans
- Daily traffic
- 619
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
Irr-Fm over Iowa River Overflow is a steel stringer/multi-beam or girder carrying Irr-Fm over Iowa River Overflow in Tama County, Iowa. It was built in 1972 and reconstructed in 1985, so it is 53 years old, older than the Iowa average of 45.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 619 vehicles a day, roughly 13% of them trucks, projected to reach 619 by 2044. The structure is 102 ft (31.1 m) long and 32 ft wide. If it were closed, the detour would be 3.7 mi (6 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 Irr-Fm over Iowa River Overflow built?
It was built in 1972, making it 53 years old in 2025. It was reconstructed in 1985.
What condition is Irr-Fm over Iowa River Overflow in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2024.
How much traffic does Irr-Fm over Iowa River Overflow carry?
About 619 vehicles per day (2022 count), of which roughly 13% are trucks.
How long is Irr-Fm over Iowa River Overflow?
The structure is 102 ft (31.1 m) long with a longest span of 34 ft (10.4 m) and a deck 32 ft wide.
Who owns Irr-Fm over Iowa River Overflow?
It is owned by the County Highway Agency.