SB I-35 over Iowa River
FairWright County, Iowa · 4.0 Mi. N of SR C 70 · Structure no. 000000000602620
- Built
- 1974
- 51 years old
- Condition
- Fair
- inspected January 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 294 ft
- 3 main spans
- Daily traffic
- 8,250
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
SB I-35 over Iowa River is a prestressed concrete stringer/multi-beam or girder carrying SB I-35 over Iowa River 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 fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 8,250 vehicles a day, roughly 31% of them trucks, projected to reach 8,250 by 2044. The structure is 294 ft (89.6 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SB I-35 over Iowa River built?
It was built in 1974, making it 51 years old in 2025.
What condition is SB I-35 over Iowa River in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in January 2024.
How much traffic does SB I-35 over Iowa River carry?
About 8,250 vehicles per day (2022 count), of which roughly 31% are trucks.
How long is SB I-35 over Iowa River?
The structure is 294 ft (89.6 m) long with a longest span of 97 ft (29.6 m) and a deck 43 ft wide.
Who owns SB I-35 over Iowa River?
It is owned by the State Highway Agency.