SB I-380 over Cc RR & Ash Pit
FairLinn County, Iowa · 2.9 Mi. S of Jct. 100 · Structure no. 000000000604220
- Built
- 1979
- 46 years old
- Condition
- Fair
- inspected June 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 1,763 ft
- 17 main spans
- Daily traffic
- 41,000
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
SB I-380 over Cc RR & Ash Pit is a steel continuous stringer/multi-beam or girder carrying SB I-380 over Cc RR & Ash Pit in Linn County, Iowa. It was built in 1979, so it is 46 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 41,000 vehicles a day, roughly 10% of them trucks, projected to reach 41,000 by 2043. The structure is 1,763 ft (537.4 m) long and 56 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SB I-380 over Cc RR & Ash Pit built?
It was built in 1979, making it 46 years old in 2025.
What condition is SB I-380 over Cc RR & Ash Pit 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 June 2023.
How much traffic does SB I-380 over Cc RR & Ash Pit carry?
About 41,000 vehicles per day (2021 count), of which roughly 10% are trucks.
How long is SB I-380 over Cc RR & Ash Pit?
The structure is 1,763 ft (537.4 m) long with a longest span of 134 ft (40.8 m) and a deck 56 ft wide.
Who owns SB I-380 over Cc RR & Ash Pit?
It is owned by the State Highway Agency.