235th Street over Big Creek
PoorHenry County, Iowa · 071071227 · Structure no. 000000000028440
- Built
- 1957
- 68 years old
- Condition
- Poor
- inspected February 2023
- Type
- Girder and Floorbeam System
- Steel Continuous
- Length
- 418 ft
- 3 main spans
- Daily traffic
- 2,930
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
235th Street over Big Creek is a steel continuous girder and floorbeam system carrying 235th Street over Big Creek in Henry County, Iowa. It was built in 1957, so it is 68 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.
It carries about 2,930 vehicles a day, roughly 11% of them trucks, projected to reach 2,930 by 2043. The structure is 418 ft (127.4 m) long and 34 ft wide. If it were closed, the detour would be 11.2 mi (18 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, 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 235th Street over Big Creek built?
It was built in 1957, making it 68 years old in 2025.
What condition is 235th Street over Big 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 February 2023.
How much traffic does 235th Street over Big Creek carry?
About 2,930 vehicles per day (2022 count), of which roughly 11% are trucks.
How long is 235th Street over Big Creek?
The structure is 418 ft (127.4 m) long with a longest span of 160 ft (48.8 m) and a deck 34 ft wide.
Who owns 235th Street over Big Creek?
It is owned by the County Highway Agency.