20 S 08 W 17.00: over South Sisters Creek
GoodDouglas County, Oregon · 41.5 Miles NE of HWY 101 · Structure no. 0000000L1439036
- Built
- 1955
- 70 years old
- Condition
- Good
- inspected March 2023
- Type
- Tee Beam
- Concrete Continuous
- Length
- 75 ft
- 3 main spans
- Daily traffic
- 50
- 2023 count
- Owner
- Federal
- Bureau of Land Management
About this bridge
20 S 08 W 17.00: over South Sisters Creek is a concrete continuous tee beam carrying 20 S 08 W 17.00: over South Sisters Creek in Douglas County, Oregon. It was built in 1955, so it is 70 years old, older 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 50 vehicles a day, roughly 10% of them trucks, projected to reach 75 by 2043. The structure is 75 ft (22.9 m) long and 16 ft wide. If it were closed, the detour would be 8.7 mi (14 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 20 S 08 W 17.00: over South Sisters Creek built?
It was built in 1955, making it 70 years old in 2025.
What condition is 20 S 08 W 17.00: over South Sisters 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 March 2023.
How much traffic does 20 S 08 W 17.00: over South Sisters Creek carry?
About 50 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is 20 S 08 W 17.00: over South Sisters Creek?
The structure is 75 ft (22.9 m) long with a longest span of 50 ft (15.2 m) and a deck 16 ft wide.
Who owns 20 S 08 W 17.00: over South Sisters Creek?
It is owned by the Bureau of Land Management.