305th ST over I-35
GoodWright County, Iowa · 3.3 Mi. N of Jct. SR R75 · Structure no. 000000000602605
- Built
- 1974
- 51 years old
- Condition
- Good
- inspected May 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 391 ft
- 4 main spans
- Daily traffic
- 81
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
305th ST over I-35 is a steel continuous stringer/multi-beam or girder carrying 305th ST over I-35 in Wright County, Iowa. It was built in 1974, so it is 51 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 81 vehicles a day, projected to reach 81 by 2042. The structure is 391 ft (119.2 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 305th ST over I-35 built?
It was built in 1974, making it 51 years old in 2025.
What condition is 305th ST over I-35 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 May 2024.
How much traffic does 305th ST over I-35 carry?
About 81 vehicles per day (2022 count).
How long is 305th ST over I-35?
The structure is 391 ft (119.2 m) long with a longest span of 125 ft (38.1 m) and a deck 33 ft wide.
Who owns 305th ST over I-35?
It is owned by the State Highway Agency.