CO RD 424 over Iron River
FairIron County, Michigan · So City Limits · Structure no. 000000000004214
- Built
- 1929
- 96 years old, rebuilt 1992
- Condition
- Fair
- inspected September 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 55 ft
- 1 main span
- Daily traffic
- 800
- 1996 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
CO RD 424 over Iron River is a prestressed concrete box beam or girders - multiple carrying CO RD 424 over Iron River in Iron County, Michigan. It was built in 1929 and reconstructed in 1992, so it is 96 years old, older than the Michigan average of 48.3 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 800 vehicles a day, projected to reach 750 by 2016. The structure is 55 ft (16.7 m) long and 38 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 | 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 CO RD 424 over Iron River built?
It was built in 1929, making it 96 years old in 2025. It was reconstructed in 1992.
What condition is CO RD 424 over Iron 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 September 2024.
How much traffic does CO RD 424 over Iron River carry?
About 800 vehicles per day (1996 count).
How long is CO RD 424 over Iron River?
The structure is 55 ft (16.7 m) long with a longest span of 51 ft (15.5 m) and a deck 38 ft wide.
Who owns CO RD 424 over Iron River?
It is owned by the City or Municipal Highway Agency.