355th ST over Little Sioux River
PoorPosted for loadClay County, Iowa · 096371106 · Structure no. 000000000116880
- Built
- 1905
- 120 years old
- Condition
- Poor
- inspected April 2023
- Type
- Truss - Thru
- Steel
- Length
- 180 ft
- 1 main span
- Daily traffic
- 41
- 2021 count
- Owner
- County
- County Highway Agency
About this bridge
355th ST over Little Sioux River is a steel truss - thru carrying 355th ST over Little Sioux River in Clay County, Iowa. It was built in 1905, so it is 120 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 3 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. Its operating status is: posted for load restriction.
It carries about 41 vehicles a day, projected to reach 41 by 2043. The structure is 180 ft (54.9 m) long and 15 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 7 Good | Some minor problems. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| 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 355th ST over Little Sioux River built?
It was built in 1905, making it 120 years old in 2025.
What condition is 355th ST over Little Sioux 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 355th ST over Little Sioux River carry?
About 41 vehicles per day (2021 count).
How long is 355th ST over Little Sioux River?
The structure is 180 ft (54.9 m) long with a longest span of 164 ft (50 m) and a deck 15 ft wide.
Who owns 355th ST over Little Sioux River?
It is owned by the County Highway Agency.