WB US 30 over Timber Creek
GoodMarshall County, Iowa · 3.0 Miles E of JCT Ia 14 · Structure no. 000000000601695
- Built
- 1995
- 30 years old
- Condition
- Good
- inspected October 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 192 ft
- 3 main spans
- Daily traffic
- 7,450
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
WB US 30 over Timber Creek is a prestressed concrete stringer/multi-beam or girder carrying WB US 30 over Timber Creek in Marshall County, Iowa. It was built in 1995, so it is 30 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 7,450 vehicles a day, roughly 13% of them trucks, projected to reach 7,450 by 2043. The structure is 192 ft (58.5 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was WB US 30 over Timber Creek built?
It was built in 1995, making it 30 years old in 2025.
What condition is WB US 30 over 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 October 2023.
How much traffic does WB US 30 over Timber Creek carry?
About 7,450 vehicles per day (2023 count), of which roughly 13% are trucks.
How long is WB US 30 over Timber Creek?
The structure is 192 ft (58.5 m) long with a longest span of 77 ft (23.5 m) and a deck 43 ft wide.
Who owns WB US 30 over Timber Creek?
It is owned by the State Highway Agency.