Knights Bridge RD over Molalla River
FairPosted for loadClackamas County, Oregon · 005 MI W Canby · Structure no. 06520 022 00317
- Built
- 1964
- 61 years old
- Condition
- Fair
- inspected May 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 346 ft
- 1 main span
- Daily traffic
- 20,000
- 2018 count
- Owner
- County
- County Highway Agency
About this bridge
Knights Bridge RD over Molalla River is a prestressed concrete stringer/multi-beam or girder carrying Knights Bridge RD over Molalla River in Clackamas County, Oregon. It was built in 1964, so it is 61 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 5 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 load restriction.
It carries about 20,000 vehicles a day, roughly 5% of them trucks, projected to reach 28,000 by 2038. The structure is 346 ft (105.5 m) long and 31 ft wide. If it were closed, the detour would be 2.5 mi (4 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 Knights Bridge RD over Molalla River built?
It was built in 1964, making it 61 years old in 2025.
What condition is Knights Bridge RD over Molalla River 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 May 2024.
How much traffic does Knights Bridge RD over Molalla River carry?
About 20,000 vehicles per day (2018 count), of which roughly 5% are trucks.
How long is Knights Bridge RD over Molalla River?
The structure is 346 ft (105.5 m) long with a longest span of 87 ft (26.5 m) and a deck 31 ft wide.
Who owns Knights Bridge RD over Molalla River?
It is owned by the County Highway Agency.