US 18 over Stream
FairO'Brien County, Iowa · 1.6 Mi. W of Jct. SR M12 · Structure no. 000000000605770
- Built
- 1958
- 67 years old, rebuilt 1989
- Condition
- Fair
- inspected December 2024
- Type
- Culvert
- Concrete Continuous
- Length
- 27 ft
- 3 main spans
- Daily traffic
- 3,530
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
US 18 over Stream is a concrete continuous culvert carrying US 18 over Stream in O'Brien County, Iowa. It was built in 1958 and reconstructed in 1989, so it is 67 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 3,530 vehicles a day, roughly 20% of them trucks, projected to reach 3,530 by 2044. The structure is 27 ft (8.1 m) long. If it were closed, the detour would be 8.1 mi (13 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 | 7 Good | Some minor problems. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 18 over Stream built?
It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1989.
What condition is US 18 over Stream 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 December 2024.
How much traffic does US 18 over Stream carry?
About 3,530 vehicles per day (2022 count), of which roughly 20% are trucks.
How long is US 18 over Stream?
The structure is 27 ft (8.1 m) long with a longest span of 8 ft (2.4 m).
Who owns US 18 over Stream?
It is owned by the State Highway Agency.