Or 18 (hwy 39) over Yamhill River Overflow
FairYamhill County, Oregon · 015 MI W HWY 156 JCT · Structure no. 08492 039 04576
- Built
- 1963
- 62 years old
- Condition
- Fair
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Concrete Continuous
- Length
- 300 ft
- 10 main spans
- Daily traffic
- 24,417
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Or 18 (hwy 39) over Yamhill River Overflow is a concrete continuous stringer/multi-beam or girder carrying Or 18 (hwy 39) over Yamhill River Overflow in Yamhill County, Oregon. It was built in 1963, so it is 62 years old, older than the Oregon average of 49.9 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 24,417 vehicles a day, roughly 4% of them trucks, projected to reach 29,100 by 2042. The structure is 300 ft (91.4 m) long and 35 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 | 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 Or 18 (hwy 39) over Yamhill River Overflow built?
It was built in 1963, making it 62 years old in 2025.
What condition is Or 18 (hwy 39) over Yamhill River 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 November 2024.
How much traffic does Or 18 (hwy 39) over Yamhill River Overflow carry?
About 24,417 vehicles per day (2022 count), of which roughly 4% are trucks.
How long is Or 18 (hwy 39) over Yamhill River Overflow?
The structure is 300 ft (91.4 m) long with a longest span of 30 ft (9.1 m) and a deck 35 ft wide.
Who owns Or 18 (hwy 39) over Yamhill River Overflow?
It is owned by the State Highway Agency.