SB I-380 over 42nd ST
FairLinn County, Iowa · 0.5 Mi. S of Jct. 100 · Structure no. 000000000604705
- Built
- 1981
- 44 years old
- Condition
- Fair
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 191 ft
- 3 main spans
- Daily traffic
- 28,050
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
SB I-380 over 42nd ST is a prestressed concrete stringer/multi-beam or girder carrying SB I-380 over 42nd ST in Linn County, Iowa. It was built in 1981, so it is 44 years old, younger than the Iowa average of 45.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 28,050 vehicles a day, roughly 13% of them trucks, projected to reach 28,050 by 2044. The structure is 191 ft (58.2 m) long and 59 ft wide.
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SB I-380 over 42nd ST built?
It was built in 1981, making it 44 years old in 2025.
What condition is SB I-380 over 42nd ST in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in November 2024.
How much traffic does SB I-380 over 42nd ST carry?
About 28,050 vehicles per day (2022 count), of which roughly 13% are trucks.
How long is SB I-380 over 42nd ST?
The structure is 191 ft (58.2 m) long with a longest span of 97 ft (29.6 m) and a deck 59 ft wide.
Who owns SB I-380 over 42nd ST?
It is owned by the State Highway Agency.