US 20 (hwy 16) over Noble Slough
GoodLinn County, Oregon · 070 MI E Lebanon · Structure no. 04242A016 02170
- Built
- 1983
- 42 years old
- Condition
- Good
- inspected February 2024
- Type
- Slab
- Prestressed Concrete
- Length
- 60 ft
- 1 main span
- Daily traffic
- 11,363
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
US 20 (hwy 16) over Noble Slough is a prestressed concrete slab carrying US 20 (hwy 16) over Noble Slough in Linn County, Oregon. It was built in 1983, so it is 42 years old, younger than the Oregon average of 49.9 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 11,363 vehicles a day, roughly 5% of them trucks, projected to reach 11,500 by 2042. The structure is 60 ft (18.3 m) long and 80 ft wide. If it were closed, the detour would be 19.9 mi (32 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 20 (hwy 16) over Noble Slough built?
It was built in 1983, making it 42 years old in 2025.
What condition is US 20 (hwy 16) over Noble Slough in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2024.
How much traffic does US 20 (hwy 16) over Noble Slough carry?
About 11,363 vehicles per day (2022 count), of which roughly 5% are trucks.
How long is US 20 (hwy 16) over Noble Slough?
The structure is 60 ft (18.3 m) long with a longest span of 60 ft (18.3 m) and a deck 80 ft wide.
Who owns US 20 (hwy 16) over Noble Slough?
It is owned by the State Highway Agency.