HWY 3 over Riverside Canyon
FairPosted for loadMultnomah County, Oregon · 0.04 MI N Riverwood Road · Structure no. 01185A003 00400
- Built
- 1926
- 99 years old, rebuilt 1971
- Condition
- Fair
- inspected December 2023
- Type
- Tee Beam
- Concrete Continuous
- Length
- 655 ft
- 5 main spans
- Daily traffic
- 14,839
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
HWY 3 over Riverside Canyon is a concrete continuous tee beam carrying HWY 3 over Riverside Canyon in Multnomah County, Oregon. It was built in 1926 and reconstructed in 1971, so it is 99 years old, older than the Oregon average of 49.9 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for other load-capacity restriction.
It carries about 14,839 vehicles a day, roughly 1% of them trucks, projected to reach 16,800 by 2042. The structure is 655 ft (199.7 m) long and 8 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was HWY 3 over Riverside Canyon built?
It was built in 1926, making it 99 years old in 2025. It was reconstructed in 1971.
What condition is HWY 3 over Riverside Canyon in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in December 2023.
How much traffic does HWY 3 over Riverside Canyon carry?
About 14,839 vehicles per day (2022 count), of which roughly 1% are trucks.
How long is HWY 3 over Riverside Canyon?
The structure is 655 ft (199.7 m) long with a longest span of 48 ft (14.6 m) and a deck 8 ft wide.
Who owns HWY 3 over Riverside Canyon?
It is owned by the State Highway Agency.