County RD 146 over Lookingglass Creek
GoodDouglas County, Oregon · 2.4 MI W of Lookingglass · Structure no. 19C192014600080
- Built
- 1984
- 41 years old
- Condition
- Good
- inspected July 2023
- Type
- Slab
- Prestressed Concrete
- Length
- 72 ft
- 1 main span
- Daily traffic
- 501
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
County RD 146 over Lookingglass Creek is a prestressed concrete slab carrying County RD 146 over Lookingglass Creek in Douglas County, Oregon. It was built in 1984, so it is 41 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 501 vehicles a day, roughly 5% of them trucks, projected to reach 566 by 2025. The structure is 72 ft (21.9 m) long and 24 ft wide. If it were closed, the detour would be 2.5 mi (4 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was County RD 146 over Lookingglass Creek built?
It was built in 1984, making it 41 years old in 2025.
What condition is County RD 146 over Lookingglass Creek 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 July 2023.
How much traffic does County RD 146 over Lookingglass Creek carry?
About 501 vehicles per day (2020 count), of which roughly 5% are trucks.
How long is County RD 146 over Lookingglass Creek?
The structure is 72 ft (21.9 m) long with a longest span of 67 ft (20.4 m) and a deck 24 ft wide.
Who owns County RD 146 over Lookingglass Creek?
It is owned by the County Highway Agency.