I 380 SB over East Otter Creek
FairLinn County, Iowa · 1.3 Mi. N S.R. E34 · Structure no. 000000000605060
- Built
- 1983
- 42 years old
- Condition
- Fair
- inspected September 2022
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 117 ft
- 3 main spans
- Daily traffic
- 12,850
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
I 380 SB over East Otter Creek is a prestressed concrete stringer/multi-beam or girder carrying I 380 SB over East Otter Creek in Linn County, Iowa. It was built in 1983, so it is 42 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 12,850 vehicles a day, roughly 24% of them trucks, projected to reach 12,850 by 2042. The structure is 117 ft (35.7 m) long and 43 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 | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I 380 SB over East Otter Creek built?
It was built in 1983, making it 42 years old in 2025.
What condition is I 380 SB over East Otter Creek 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 September 2022.
How much traffic does I 380 SB over East Otter Creek carry?
About 12,850 vehicles per day (2022 count), of which roughly 24% are trucks.
How long is I 380 SB over East Otter Creek?
The structure is 117 ft (35.7 m) long with a longest span of 44 ft (13.4 m) and a deck 43 ft wide.
Who owns I 380 SB over East Otter Creek?
It is owned by the State Highway Agency.