EB Ia 163 over Walnut Creek
GoodJasper County, Iowa · 2.4 Mi. W of Jct. Ia 117 · Structure no. 000000000030811
- Built
- 1974
- 51 years old
- Condition
- Good
- inspected May 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 98 ft
- 1 main span
- Daily traffic
- 5,800
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
EB Ia 163 over Walnut Creek is a prestressed concrete stringer/multi-beam or girder carrying EB Ia 163 over Walnut Creek in Jasper 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 5,800 vehicles a day, roughly 12% of them trucks, projected to reach 5,800 by 2044. The structure is 98 ft (29.9 m) long and 47 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 | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was EB Ia 163 over Walnut Creek built?
It was built in 1974, making it 51 years old in 2025.
What condition is EB Ia 163 over Walnut Creek 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 EB Ia 163 over Walnut Creek carry?
About 5,800 vehicles per day (2022 count), of which roughly 12% are trucks.
How long is EB Ia 163 over Walnut Creek?
The structure is 98 ft (29.9 m) long with a longest span of 95 ft (29 m) and a deck 47 ft wide.
Who owns EB Ia 163 over Walnut Creek?
It is owned by the State Highway Agency.