560th Ave over Ham-Story 1 Open Dd
PoorPosted for loadStory County, Iowa · 085233102 · Structure no. 000000000316240
- Built
- 1924
- 101 years old
- Condition
- Poor
- inspected November 2022
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 27 ft
- 1 main span
- Daily traffic
- 34
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
560th Ave over Ham-Story 1 Open Dd is a steel stringer/multi-beam or girder carrying 560th Ave over Ham-Story 1 Open Dd in Story County, Iowa. It was built in 1924, so it is 101 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 34 vehicles a day, projected to reach 34 by 2043. The structure is 27 ft (8.2 m) long and 21 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 560th Ave over Ham-Story 1 Open Dd built?
It was built in 1924, making it 101 years old in 2025.
What condition is 560th Ave over Ham-Story 1 Open Dd 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 November 2022.
How much traffic does 560th Ave over Ham-Story 1 Open Dd carry?
About 34 vehicles per day (2022 count).
How long is 560th Ave over Ham-Story 1 Open Dd?
The structure is 27 ft (8.2 m) long with a longest span of 24 ft (7.3 m) and a deck 21 ft wide.
Who owns 560th Ave over Ham-Story 1 Open Dd?
It is owned by the County Highway Agency.