Sunnybrook ST (e) over Unknown Creek
GoodClackamas County, Oregon · East End of Sunnybrook RD · Structure no. 18311 000 00000
- Built
- 2001
- 24 years old
- Condition
- Good
- inspected May 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 80 ft
- 1 main span
- Daily traffic
- 12,215
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
Sunnybrook ST (e) over Unknown Creek is a prestressed concrete stringer/multi-beam or girder carrying Sunnybrook ST (e) over Unknown Creek in Clackamas County, Oregon. It was built in 2001, so it is 24 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 12,215 vehicles a day, roughly 5% of them trucks, projected to reach 12,965 by 2025. The structure is 80 ft (24.3 m) long and 84 ft wide.
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 | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Sunnybrook ST (e) over Unknown Creek built?
It was built in 2001, making it 24 years old in 2025.
What condition is Sunnybrook ST (e) over Unknown 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 May 2023.
How much traffic does Sunnybrook ST (e) over Unknown Creek carry?
About 12,215 vehicles per day (2020 count), of which roughly 5% are trucks.
How long is Sunnybrook ST (e) over Unknown Creek?
The structure is 80 ft (24.3 m) long with a longest span of 79 ft (24 m) and a deck 84 ft wide.
Who owns Sunnybrook ST (e) over Unknown Creek?
It is owned by the County Highway Agency.