FM over Dm River
GoodHumboldt County, Iowa · 093281603 · Structure no. 000000000185191
- Built
- 2001
- 24 years old
- Condition
- Good
- inspected November 2022
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 243 ft
- 4 main spans
- Daily traffic
- 478
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
FM over Dm River is a prestressed concrete stringer/multi-beam or girder carrying FM over Dm River in Humboldt County, Iowa. It was built in 2001, so it is 24 years old, younger than the Iowa average of 45.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 478 vehicles a day, roughly 14% of them trucks, projected to reach 478 by 2043. The structure is 243 ft (74.1 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was FM over Dm River built?
It was built in 2001, making it 24 years old in 2025.
What condition is FM over Dm River in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2022.
How much traffic does FM over Dm River carry?
About 478 vehicles per day (2022 count), of which roughly 14% are trucks.
How long is FM over Dm River?
The structure is 243 ft (74.1 m) long with a longest span of 80 ft (24.4 m) and a deck 33 ft wide.
Who owns FM over Dm River?
It is owned by the County Highway Agency.