County RD 20A over Cow Creek
PoorPosted for loadDouglas County, Oregon · 2.0 MI SE of Riddle · Structure no. 19C494 20A 200
- Built
- 1956
- 69 years old
- Condition
- Poor
- inspected April 2024
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 416 ft
- 3 main spans
- Daily traffic
- 857
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
County RD 20A over Cow Creek is a concrete continuous box beam or girders - multiple carrying County RD 20A over Cow Creek in Douglas County, Oregon. It was built in 1956, so it is 69 years old, older 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: posted for load restriction.
It carries about 857 vehicles a day, roughly 7% of them trucks, projected to reach 967 by 2025. The structure is 416 ft (126.8 m) long and 31 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 County RD 20A over Cow Creek built?
It was built in 1956, making it 69 years old in 2025.
What condition is County RD 20A over Cow Creek 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 April 2024.
How much traffic does County RD 20A over Cow Creek carry?
About 857 vehicles per day (2020 count), of which roughly 7% are trucks.
How long is County RD 20A over Cow Creek?
The structure is 416 ft (126.8 m) long with a longest span of 100 ft (30.5 m) and a deck 31 ft wide.
Who owns County RD 20A over Cow Creek?
It is owned by the County Highway Agency.