1840 170th ST over E Br Iowa River
FairHancock County, Iowa · 095243601 · Structure no. 000000000173361
- Built
- 1975
- 50 years old
- Condition
- Fair
- inspected March 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 142 ft
- 3 main spans
- Daily traffic
- 649
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
1840 170th ST over E Br Iowa River is a prestressed concrete stringer/multi-beam or girder carrying 1840 170th ST over E Br Iowa River in Hancock 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 649 vehicles a day, roughly 19% of them trucks, projected to reach 649 by 2044. The structure is 142 ft (43.3 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| 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 1840 170th ST over E Br Iowa River built?
It was built in 1975, making it 50 years old in 2025.
What condition is 1840 170th ST over E Br Iowa 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 March 2024.
How much traffic does 1840 170th ST over E Br Iowa River carry?
About 649 vehicles per day (2022 count), of which roughly 19% are trucks.
How long is 1840 170th ST over E Br Iowa River?
The structure is 142 ft (43.3 m) long with a longest span of 52 ft (15.9 m) and a deck 32 ft wide.
Who owns 1840 170th ST over E Br Iowa River?
It is owned by the County Highway Agency.