WB US 30 over Grant Creek
GoodStory County, Iowa · 2.8 Mi. E of Jct. I-35 · Structure no. 000000000048785
- Built
- 1991
- 34 years old
- Condition
- Good
- inspected October 2024
- Type
- Slab
- Concrete Continuous
- Length
- 83 ft
- 3 main spans
- Daily traffic
- 8,450
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
WB US 30 over Grant Creek is a concrete continuous slab carrying WB US 30 over Grant Creek in Story County, Iowa. It was built in 1991, so it is 34 years old, younger 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 8,450 vehicles a day, roughly 7% of them trucks, projected to reach 8,450 by 2044. The structure is 83 ft (25.3 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
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. |
| 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 WB US 30 over Grant Creek built?
It was built in 1991, making it 34 years old in 2025.
What condition is WB US 30 over Grant 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 October 2024.
How much traffic does WB US 30 over Grant Creek carry?
About 8,450 vehicles per day (2023 count), of which roughly 7% are trucks.
How long is WB US 30 over Grant Creek?
The structure is 83 ft (25.3 m) long with a longest span of 31 ft (9.4 m) and a deck 43 ft wide.
Who owns WB US 30 over Grant Creek?
It is owned by the State Highway Agency.