350th ST over Small Stream
PoorPosted for loadSioux County, Iowa · 096441704 · Structure no. 000000000311430
- Built
- 1938
- 87 years old, rebuilt 1975
- Condition
- Poor
- inspected March 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 75 ft
- 1 main span
- Daily traffic
- 11
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
350th ST over Small Stream is a steel stringer/multi-beam or girder carrying 350th ST over Small Stream in Sioux County, Iowa. It was built in 1938 and reconstructed in 1975, so it is 87 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. Its operating status is: posted for load restriction.
It carries about 11 vehicles a day, projected to reach 11 by 2044. The structure is 75 ft (22.9 m) long and 20 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 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 350th ST over Small Stream built?
It was built in 1938, making it 87 years old in 2025. It was reconstructed in 1975.
What condition is 350th ST over Small Stream 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 March 2024.
How much traffic does 350th ST over Small Stream carry?
About 11 vehicles per day (2022 count).
How long is 350th ST over Small Stream?
The structure is 75 ft (22.9 m) long with a longest span of 30 ft (9.1 m) and a deck 20 ft wide.
Who owns 350th ST over Small Stream?
It is owned by the County Highway Agency.