Or 18 Bus (HWY157) over Willamina River
FairYamhill County, Oregon · In Willamina · Structure no. 00937A157 00225
- Built
- 1963
- 62 years old
- Condition
- Fair
- inspected March 2023
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 159 ft
- 3 main spans
- Daily traffic
- 5,308
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Or 18 Bus (HWY157) over Willamina River is a concrete continuous box beam or girders - multiple carrying Or 18 Bus (HWY157) over Willamina River 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 5 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 5,308 vehicles a day, roughly 18% of them trucks, projected to reach 5,500 by 2042. The structure is 159 ft (48.5 m) long and 42 ft wide. If it were closed, the detour would be 5.6 mi (9 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 | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Or 18 Bus (HWY157) over Willamina River built?
It was built in 1963, making it 62 years old in 2025.
What condition is Or 18 Bus (HWY157) over Willamina River 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 March 2023.
How much traffic does Or 18 Bus (HWY157) over Willamina River carry?
About 5,308 vehicles per day (2022 count), of which roughly 18% are trucks.
How long is Or 18 Bus (HWY157) over Willamina River?
The structure is 159 ft (48.5 m) long with a longest span of 75 ft (22.9 m) and a deck 42 ft wide.
Who owns Or 18 Bus (HWY157) over Willamina River?
It is owned by the State Highway Agency.