FM 170th ST over Four Mile Creek
FairKossuth County, Iowa · 095293401 · Structure no. 000000000214861
- Built
- 1975
- 50 years old
- Condition
- Fair
- inspected May 2023
- Type
- Slab
- Concrete Continuous
- Length
- 78 ft
- 3 main spans
- Daily traffic
- 249
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
FM 170th ST over Four Mile Creek is a concrete continuous slab carrying FM 170th ST over Four Mile Creek in Kossuth County, Iowa. It was built in 1975, so it is 50 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 249 vehicles a day, roughly 27% of them trucks, projected to reach 249 by 2043. The structure is 78 ft (23.9 m) long and 32 ft wide. If it were closed, the detour would be 3.1 mi (5 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 FM 170th ST over Four Mile Creek built?
It was built in 1975, making it 50 years old in 2025.
What condition is FM 170th ST over Four Mile Creek 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 May 2023.
How much traffic does FM 170th ST over Four Mile Creek carry?
About 249 vehicles per day (2022 count), of which roughly 27% are trucks.
How long is FM 170th ST over Four Mile Creek?
The structure is 78 ft (23.9 m) long with a longest span of 29 ft (8.8 m) and a deck 32 ft wide.
Who owns FM 170th ST over Four Mile Creek?
It is owned by the County Highway Agency.