155th ST over Silver Creek
PoorPosted for loadClayton County, Iowa · 095053303 · Structure no. 000000000121300
- Built
- 1925
- 100 years old
- Condition
- Poor
- inspected October 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 26 ft
- 1 main span
- Daily traffic
- 26
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
155th ST over Silver Creek is a steel stringer/multi-beam or girder carrying 155th ST over Silver Creek in Clayton County, Iowa. It was built in 1925, so it is 100 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 26 vehicles a day, projected to reach 26 by 2044. The structure is 26 ft (7.9 m) long and 16 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 | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 155th ST over Silver Creek built?
It was built in 1925, making it 100 years old in 2025.
What condition is 155th ST over Silver Creek 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 October 2024.
How much traffic does 155th ST over Silver Creek carry?
About 26 vehicles per day (2022 count).
How long is 155th ST over Silver Creek?
The structure is 26 ft (7.9 m) long with a longest span of 25 ft (7.6 m) and a deck 16 ft wide.
Who owns 155th ST over Silver Creek?
It is owned by the County Highway Agency.