US26 (hwy 026AC) over Arthur ST Viaduct
PoorMultnomah County, Oregon · 1.0 MI SE Portland Cc · Structure no. 05194R026 00002
- Built
- 1947
- 78 years old
- Condition
- Poor
- inspected May 2023
- Type
- Tee Beam
- Concrete
- Length
- 266 ft
- 7 main spans
- Daily traffic
- 8,710
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
US26 (hwy 026AC) over Arthur ST Viaduct is a concrete tee beam carrying US26 (hwy 026AC) over Arthur ST Viaduct in Multnomah County, Oregon. It was built in 1947, so it is 78 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 8,710 vehicles a day, roughly 1% of them trucks, projected to reach 11,200 by 2042. The structure is 266 ft (81 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 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 US26 (hwy 026AC) over Arthur ST Viaduct built?
It was built in 1947, making it 78 years old in 2025.
What condition is US26 (hwy 026AC) over Arthur ST Viaduct 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 May 2023.
How much traffic does US26 (hwy 026AC) over Arthur ST Viaduct carry?
About 8,710 vehicles per day (2022 count), of which roughly 1% are trucks.
How long is US26 (hwy 026AC) over Arthur ST Viaduct?
The structure is 266 ft (81 m) long with a longest span of 40 ft (12.2 m) and a deck 33 ft wide.
Who owns US26 (hwy 026AC) over Arthur ST Viaduct?
It is owned by the State Highway Agency.