Windsor Island RD over Overflow Channel
PoorMarion County, Oregon · 03.5 N of Chemawa · Structure no. 05422A604 00000
- Built
- 1958
- 67 years old
- Condition
- Poor
- inspected August 2024
- Type
- Tee Beam
- Concrete
- Length
- 202 ft
- 8 main spans
- Daily traffic
- 821
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
Windsor Island RD over Overflow Channel is a concrete tee beam carrying Windsor Island RD over Overflow Channel in Marion County, Oregon. It was built in 1958, so it is 67 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: open, would be posted or closed except for temporary shoring.
It carries about 821 vehicles a day, roughly 7% of them trucks, projected to reach 916 by 2025. The structure is 202 ft (61.6 m) long and 29 ft wide. If it were closed, the detour would be 8.7 mi (14 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 | 8 Very Good | No problems noted. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Windsor Island RD over Overflow Channel built?
It was built in 1958, making it 67 years old in 2025.
What condition is Windsor Island RD over Overflow Channel 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 August 2024.
How much traffic does Windsor Island RD over Overflow Channel carry?
About 821 vehicles per day (2020 count), of which roughly 7% are trucks.
How long is Windsor Island RD over Overflow Channel?
The structure is 202 ft (61.6 m) long with a longest span of 25 ft (7.6 m) and a deck 29 ft wide.
Who owns Windsor Island RD over Overflow Channel?
It is owned by the County Highway Agency.