Learned Road over Slough
PoorPosted for loadTillamook County, Oregon · 1.7 MI W of Cloverdale · Structure no. 57C51 875 00005
- Built
- 1964
- 61 years old
- Condition
- Poor
- inspected June 2024
- Type
- Stringer/Multi-beam or Girder
- Wood or Timber
- Length
- 119 ft
- 1 main span
- Daily traffic
- 74
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
Learned Road over Slough is a wood or timber stringer/multi-beam or girder carrying Learned Road over Slough in Tillamook County, Oregon. It was built in 1964, so it is 61 years old, older than the Oregon average of 49.9 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.
It carries about 74 vehicles a day, roughly 60% of them trucks, projected to reach 84 by 2025. The structure is 119 ft (36.3 m) long and 16 ft wide. If it were closed, the detour would be 123.7 mi (199 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Learned Road over Slough built?
It was built in 1964, making it 61 years old in 2025.
What condition is Learned Road over Slough in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in June 2024.
How much traffic does Learned Road over Slough carry?
About 74 vehicles per day (2020 count), of which roughly 60% are trucks.
How long is Learned Road over Slough?
The structure is 119 ft (36.3 m) long with a longest span of 42 ft (12.8 m) and a deck 16 ft wide.
Who owns Learned Road over Slough?
It is owned by the County Highway Agency.