Ia 330 SB over North Timber Creek
GoodMarshall County, Iowa · 2.9 Miles S of JCT US 30 · Structure no. 000000000035641
- Built
- 1979
- 46 years old
- Condition
- Good
- inspected January 2024
- Type
- Slab
- Concrete Continuous
- Length
- 134 ft
- 3 main spans
- Daily traffic
- 9,000
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Ia 330 SB over North Timber Creek is a concrete continuous slab carrying Ia 330 SB over North Timber Creek in Marshall County, Iowa. It was built in 1979, so it is 46 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 9,000 vehicles a day, roughly 16% of them trucks, projected to reach 9,000 by 2044. The structure is 134 ft (40.8 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 | 7 Good | Some minor problems. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Ia 330 SB over North Timber Creek built?
It was built in 1979, making it 46 years old in 2025.
What condition is Ia 330 SB over North Timber 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 January 2024.
How much traffic does Ia 330 SB over North Timber Creek carry?
About 9,000 vehicles per day (2022 count), of which roughly 16% are trucks.
How long is Ia 330 SB over North Timber Creek?
The structure is 134 ft (40.8 m) long with a longest span of 51 ft (15.5 m) and a deck 47 ft wide.
Who owns Ia 330 SB over North Timber Creek?
It is owned by the State Highway Agency.