30 W to 380 N Ramp over J ST SW
FairLinn County, Iowa · 0.4 Mi. E of Jct. 30/380 · Structure no. 000000000600613
- Built
- 1975
- 50 years old
- Condition
- Fair
- inspected August 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 223 ft
- 3 main spans
- Daily traffic
- 7,500
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
30 W to 380 N Ramp over J ST SW is a steel continuous stringer/multi-beam or girder carrying 30 W to 380 N Ramp over J ST SW in Linn County, Iowa. It was built in 1975, so it is 50 years old, older 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 7,500 vehicles a day, roughly 7% of them trucks, projected to reach 7,500 by 2044. The structure is 223 ft (68 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).
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 30 W to 380 N Ramp over J ST SW built?
It was built in 1975, making it 50 years old in 2025.
What condition is 30 W to 380 N Ramp over J ST SW 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 August 2024.
How much traffic does 30 W to 380 N Ramp over J ST SW carry?
About 7,500 vehicles per day (2022 count), of which roughly 7% are trucks.
How long is 30 W to 380 N Ramp over J ST SW?
The structure is 223 ft (68 m) long with a longest span of 101 ft (30.8 m) and a deck 30 ft wide.
Who owns 30 W to 380 N Ramp over J ST SW?
It is owned by the State Highway Agency.