B30 360th ST over Rock River
GoodSioux County, Iowa · 096471603 · Structure no. 000000000312161
- Built
- 2023
- 2 years old
- Condition
- Good
- inspected November 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 598 ft
- 5 main spans
- Daily traffic
- 1,017
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
B30 360th ST over Rock River is a prestressed concrete continuous stringer/multi-beam or girder carrying B30 360th ST over Rock River in Sioux County, Iowa. It was built in 2023, so it is 2 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 1,017 vehicles a day, roughly 25% of them trucks, projected to reach 1,017 by 2043. The structure is 598 ft (182.3 m) long and 33 ft wide. If it were closed, the detour would be 8.1 mi (13 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 | 9 Excellent | No problems noted. |
| Superstructure | 9 Excellent | No problems noted. |
| Substructure | 9 Excellent | 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 B30 360th ST over Rock River built?
It was built in 2023, making it 2 years old in 2025.
What condition is B30 360th ST over Rock River 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 November 2023.
How much traffic does B30 360th ST over Rock River carry?
About 1,017 vehicles per day (2022 count), of which roughly 25% are trucks.
How long is B30 360th ST over Rock River?
The structure is 598 ft (182.3 m) long with a longest span of 122 ft (37.2 m) and a deck 33 ft wide.
Who owns B30 360th ST over Rock River?
It is owned by the County Highway Agency.