I 380 SB over US 6
GoodJohnson County, Iowa · I-80 / I-380 Interchange · Structure no. 000000000600421
- Built
- 2022
- 3 years old
- Condition
- Good
- inspected April 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 287 ft
- 3 main spans
- Daily traffic
- 26,550
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
I 380 SB over US 6 is a prestressed concrete stringer/multi-beam or girder carrying I 380 SB over US 6 in Johnson County, Iowa. It was built in 2022, so it is 3 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 26,550 vehicles a day, roughly 19% of them trucks, projected to reach 26,550 by 2042. The structure is 287 ft (87.5 m) long and 78 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 | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I 380 SB over US 6 built?
It was built in 2022, making it 3 years old in 2025.
What condition is I 380 SB over US 6 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 April 2023.
How much traffic does I 380 SB over US 6 carry?
About 26,550 vehicles per day (2022 count), of which roughly 19% are trucks.
How long is I 380 SB over US 6?
The structure is 287 ft (87.5 m) long with a longest span of 137 ft (41.8 m) and a deck 78 ft wide.
Who owns I 380 SB over US 6?
It is owned by the State Highway Agency.