FM M21 over Small Stream
GoodCherokee County, Iowa · 091391504 · Structure no. 000000000107856
- Built
- 1974
- 51 years old
- Condition
- Good
- inspected August 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 21 ft
- 2 main spans
- Daily traffic
- 390
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
FM M21 over Small Stream is a concrete continuous culvert carrying FM M21 over Small Stream in Cherokee County, Iowa. It was built in 1974, so it is 51 years old, older 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 390 vehicles a day, roughly 24% of them trucks, projected to reach 390 by 2043. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 1.9 mi (3 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 |
|---|---|---|
| Channel and channel protection | 8 Very Good | No problems noted. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was FM M21 over Small Stream built?
It was built in 1974, making it 51 years old in 2025.
What condition is FM M21 over Small Stream 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 August 2023.
How much traffic does FM M21 over Small Stream carry?
About 390 vehicles per day (2022 count), of which roughly 24% are trucks.
How long is FM M21 over Small Stream?
The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).
Who owns FM M21 over Small Stream?
It is owned by the County Highway Agency.