I 380 NB over I 80
GoodJohnson County, Iowa · I-80 / I-380 Interchange · Structure no. 000000000600351
- Built
- 2021
- 4 years old
- Condition
- Good
- inspected November 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 347 ft
- 4 main spans
- Daily traffic
- 9,650
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
I 380 NB over I 80 is a prestressed concrete stringer/multi-beam or girder carrying I 380 NB over I 80 in Johnson County, Iowa. It was built in 2021, so it is 4 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 9,650 vehicles a day, roughly 16% of them trucks, projected to reach 9,650 by 2042. The structure is 347 ft (105.9 m) long and 67 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 NB over I 80 built?
It was built in 2021, making it 4 years old in 2025.
What condition is I 380 NB over I 80 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 I 380 NB over I 80 carry?
About 9,650 vehicles per day (2022 count), of which roughly 16% are trucks.
How long is I 380 NB over I 80?
The structure is 347 ft (105.9 m) long with a longest span of 112 ft (34.1 m) and a deck 67 ft wide.
Who owns I 380 NB over I 80?
It is owned by the State Highway Agency.