FM over North River
FairMadison County, Iowa · 077273602 · Structure no. 000000000234910
- Built
- 1961
- 64 years old
- Condition
- Fair
- inspected August 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 182 ft
- 3 main spans
- Daily traffic
- 50
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
FM over North River is a prestressed concrete stringer/multi-beam or girder carrying FM over North River in Madison County, Iowa. It was built in 1961, so it is 64 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 50 vehicles a day, roughly 32% of them trucks, projected to reach 50 by 2043. The structure is 182 ft (55.5 m) long and 28 ft wide. If it were closed, the detour would be 6.8 mi (11 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 North River built?
It was built in 1961, making it 64 years old in 2025.
What condition is FM over North River 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 August 2023.
How much traffic does FM over North River carry?
About 50 vehicles per day (2022 count), of which roughly 32% are trucks.
How long is FM over North River?
The structure is 182 ft (55.5 m) long with a longest span of 68 ft (20.7 m) and a deck 28 ft wide.
Who owns FM over North River?
It is owned by the County Highway Agency.