235th ST over I-29
GoodHarrison County, Iowa · 3.0 Mi. S of Jct. Ia 127 · Structure no. 000000000028230
- Built
- 1967
- 58 years old
- Condition
- Good
- inspected June 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 229 ft
- 4 main spans
- Daily traffic
- 79
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
235th ST over I-29 is a prestressed concrete stringer/multi-beam or girder carrying 235th ST over I-29 in Harrison County, Iowa. It was built in 1967, so it is 58 years old, older than the Iowa average of 45.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 79 vehicles a day, roughly 24% of them trucks, projected to reach 79 by 2044. The structure is 229 ft (69.8 m) long and 29 ft wide. If it were closed, the detour would be 13 mi (21 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 235th ST over I-29 built?
It was built in 1967, making it 58 years old in 2025.
What condition is 235th ST over I-29 in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2024.
How much traffic does 235th ST over I-29 carry?
About 79 vehicles per day (2022 count), of which roughly 24% are trucks.
How long is 235th ST over I-29?
The structure is 229 ft (69.8 m) long with a longest span of 69 ft (21 m) and a deck 29 ft wide.
Who owns 235th ST over I-29?
It is owned by the State Highway Agency.