I-280 over Lake Overflow
FairScott County, Iowa · 1.1 Mi. W of Jct. US 61 · Structure no. 000000000600630
- Built
- 1972
- 53 years old
- Condition
- Fair
- inspected June 2024
- Type
- Culvert
- Concrete Continuous
- Length
- 38 ft
- 3 main spans
- Daily traffic
- 24,200
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
I-280 over Lake Overflow is a concrete continuous culvert carrying I-280 over Lake Overflow in Scott County, Iowa. It was built in 1972, so it is 53 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 24,200 vehicles a day, roughly 31% of them trucks, projected to reach 24,200 by 2044. The structure is 38 ft (11.6 m) long. 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 |
|---|---|---|
| Channel and channel protection | 8 Very Good | No problems noted. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-280 over Lake Overflow built?
It was built in 1972, making it 53 years old in 2025.
What condition is I-280 over Lake Overflow 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 2024.
How much traffic does I-280 over Lake Overflow carry?
About 24,200 vehicles per day (2022 count), of which roughly 31% are trucks.
How long is I-280 over Lake Overflow?
The structure is 38 ft (11.6 m) long with a longest span of 12 ft (3.7 m).
Who owns I-280 over Lake Overflow?
It is owned by the State Highway Agency.