SB I-35 WB I-80 over Walnut Creek
FairPolk County, Iowa · 0.3 Mi. W of Jct. US 6 · Structure no. 000000000041290
- Built
- 1958
- 67 years old, rebuilt 1988
- Condition
- Fair
- inspected February 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 414 ft
- 6 main spans
- Daily traffic
- 49,750
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
SB I-35 WB I-80 over Walnut Creek is a steel continuous stringer/multi-beam or girder carrying SB I-35 WB I-80 over Walnut Creek in Polk County, Iowa. It was built in 1958 and reconstructed in 1988, so it is 67 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 49,750 vehicles a day, roughly 15% of them trucks, projected to reach 49,750 by 2042. The structure is 414 ft (126.2 m) long and 77 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 WB I-80 over Walnut Creek built?
It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1988.
What condition is SB I-35 WB I-80 over Walnut Creek 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 February 2023.
How much traffic does SB I-35 WB I-80 over Walnut Creek carry?
About 49,750 vehicles per day (2022 count), of which roughly 15% are trucks.
How long is SB I-35 WB I-80 over Walnut Creek?
The structure is 414 ft (126.2 m) long with a longest span of 74 ft (22.6 m) and a deck 77 ft wide.
Who owns SB I-35 WB I-80 over Walnut Creek?
It is owned by the State Highway Agency.