310th ST over Miners Creek
PoorPosted for loadClayton County, Iowa · 000000000 · Structure no. 000000000005740
- Built
- 1915
- 110 years old
- Condition
- Poor
- inspected October 2023
- Type
- Slab
- Concrete
- Length
- 37 ft
- 1 main span
- Daily traffic
- 4
- 2022 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
310th ST over Miners Creek is a concrete slab carrying 310th ST over Miners Creek in Clayton County, Iowa. It was built in 1915, so it is 110 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 other load-capacity restriction.
It carries about 4 vehicles a day, projected to reach 4 by 2043. The structure is 37 ft (11.3 m) long and 20 ft wide. If it were closed, the detour would be 5 mi (8 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 | 4 Poor | Advanced section loss, deterioration, 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 310th ST over Miners Creek built?
It was built in 1915, making it 110 years old in 2025.
What condition is 310th ST over Miners 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 2023.
How much traffic does 310th ST over Miners Creek carry?
About 4 vehicles per day (2022 count).
How long is 310th ST over Miners Creek?
The structure is 37 ft (11.3 m) long with a longest span of 36 ft (11 m) and a deck 20 ft wide.
Who owns 310th ST over Miners Creek?
It is owned by the City or Municipal Highway Agency and maintained by the County Highway Agency.