NB I-35 EB I-80 over Walnut Creek
FairPolk County, Iowa · 0.3 Mi. W of Jct. 6 · Structure no. 000000000041280
- Built
- 1958
- 67 years old, rebuilt 1988
- Condition
- Fair
- inspected October 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 414 ft
- 6 main spans
- Daily traffic
- 55,950
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
NB I-35 EB I-80 over Walnut Creek is a steel continuous stringer/multi-beam or girder carrying NB I-35 EB 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 55,950 vehicles a day, roughly 15% of them trucks, projected to reach 55,950 by 2043. 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 NB I-35 EB 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 NB I-35 EB 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 October 2023.
How much traffic does NB I-35 EB I-80 over Walnut Creek carry?
About 55,950 vehicles per day (2023 count), of which roughly 15% are trucks.
How long is NB I-35 EB 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 NB I-35 EB I-80 over Walnut Creek?
It is owned by the State Highway Agency.