325th ST over Rock Creek Overflow
PoorPosted for loadStory County, Iowa · 082222707 · Structure no. 000000000008170
- Built
- 1953
- 72 years old
- Condition
- Poor
- inspected January 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 33 ft
- 1 main span
- Daily traffic
- 190
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
325th ST over Rock Creek Overflow is a steel stringer/multi-beam or girder carrying 325th ST over Rock Creek Overflow in Story County, Iowa. It was built in 1953, so it is 72 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 190 vehicles a day, roughly 19% of them trucks, projected to reach 190 by 2043. The structure is 33 ft (10.1 m) long and 22 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 | 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 325th ST over Rock Creek Overflow built?
It was built in 1953, making it 72 years old in 2025.
What condition is 325th ST over Rock Creek Overflow 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 January 2023.
How much traffic does 325th ST over Rock Creek Overflow carry?
About 190 vehicles per day (2022 count), of which roughly 19% are trucks.
How long is 325th ST over Rock Creek Overflow?
The structure is 33 ft (10.1 m) long with a longest span of 31 ft (9.4 m) and a deck 22 ft wide.
Who owns 325th ST over Rock Creek Overflow?
It is owned by the County Highway Agency.