FM 1870 330th over Winnebago River
PoorHancock County, Iowa · 097241203 · Structure no. 000000000174130
- Built
- 1963
- 62 years old
- Condition
- Poor
- inspected April 2023
- Type
- Slab
- Concrete Continuous
- Length
- 128 ft
- 3 main spans
- Daily traffic
- 2,192
- 2021 count
- Owner
- County
- County Highway Agency
About this bridge
FM 1870 330th over Winnebago River is a concrete continuous slab carrying FM 1870 330th over Winnebago River in Hancock County, Iowa. It was built in 1963, so it is 62 years old, older than the Iowa average of 45.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 2,192 vehicles a day, roughly 2% of them trucks, projected to reach 2,192 by 2043. The structure is 128 ft (39 m) long and 30 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 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was FM 1870 330th over Winnebago River built?
It was built in 1963, making it 62 years old in 2025.
What condition is FM 1870 330th over Winnebago River in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in April 2023.
How much traffic does FM 1870 330th over Winnebago River carry?
About 2,192 vehicles per day (2021 count), of which roughly 2% are trucks.
How long is FM 1870 330th over Winnebago River?
The structure is 128 ft (39 m) long with a longest span of 49 ft (14.9 m) and a deck 30 ft wide.
Who owns FM 1870 330th over Winnebago River?
It is owned by the County Highway Agency.