FM over I-80
FairJohnson County, Iowa · 1.5 Mi. W of Jct. I-380 · Structure no. 000000000031970
- Built
- 1963
- 62 years old
- Condition
- Fair
- inspected June 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 218 ft
- 4 main spans
- Daily traffic
- 4,676
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
FM over I-80 is a prestressed concrete stringer/multi-beam or girder carrying FM over I-80 in Johnson County, Iowa. It was built in 1963, so it is 62 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 6 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 4,676 vehicles a day, roughly 11% of them trucks, projected to reach 4,676 by 2044. The structure is 218 ft (66.4 m) long and 36 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was FM over I-80 built?
It was built in 1963, making it 62 years old in 2025.
What condition is FM over I-80 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 June 2024.
How much traffic does FM over I-80 carry?
About 4,676 vehicles per day (2022 count), of which roughly 11% are trucks.
How long is FM over I-80?
The structure is 218 ft (66.4 m) long with a longest span of 65 ft (19.8 m) and a deck 36 ft wide.
Who owns FM over I-80?
It is owned by the State Highway Agency.