Tennessee RD over Slough
PoorLinn County, Oregon · 012 Miles NE HWY 20 · Structure no. 12724A000800122
- Built
- 1982
- 43 years old
- Condition
- Poor
- inspected June 2024
- Type
- Slab
- Prestressed Concrete
- Length
- 72 ft
- 2 main spans
- Daily traffic
- 422
- 2021 count
- Owner
- County
- County Highway Agency
About this bridge
Tennessee RD over Slough is a prestressed concrete slab carrying Tennessee RD over Slough in Linn County, Oregon. It was built in 1982, so it is 43 years old, younger 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: open, would be posted or closed except for temporary shoring.
It carries about 422 vehicles a day, roughly 15% of them trucks, projected to reach 587 by 2041. The structure is 72 ft (21.9 m) long and 32 ft wide. If it were closed, the detour would be 5 mi (8 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Tennessee RD over Slough built?
It was built in 1982, making it 43 years old in 2025.
What condition is Tennessee RD 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 Tennessee RD over Slough carry?
About 422 vehicles per day (2021 count), of which roughly 15% are trucks.
How long is Tennessee RD over Slough?
The structure is 72 ft (21.9 m) long with a longest span of 36 ft (11 m) and a deck 32 ft wide.
Who owns Tennessee RD over Slough?
It is owned by the County Highway Agency.