Mt Richmond RD over Tualatin River
FairWashington County, Oregon · 003 MI N County Line · Structure no. 671264064100510
- Built
- 1972
- 53 years old
- Condition
- Fair
- inspected September 2024
- Type
- Slab
- Prestressed Concrete
- Length
- 130 ft
- 3 main spans
- Daily traffic
- 305
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
Mt Richmond RD over Tualatin River is a prestressed concrete slab carrying Mt Richmond RD over Tualatin River in Washington County, Oregon. It was built in 1972, so it is 53 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.
It carries about 305 vehicles a day, roughly 5% of them trucks, projected to reach 345 by 2025. The structure is 130 ft (39.6 m) long and 29 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Mt Richmond RD over Tualatin River built?
It was built in 1972, making it 53 years old in 2025.
What condition is Mt Richmond RD over Tualatin 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 September 2024.
How much traffic does Mt Richmond RD over Tualatin River carry?
About 305 vehicles per day (2020 count), of which roughly 5% are trucks.
How long is Mt Richmond RD over Tualatin River?
The structure is 130 ft (39.6 m) long with a longest span of 50 ft (15.2 m) and a deck 29 ft wide.
Who owns Mt Richmond RD over Tualatin River?
It is owned by the County Highway Agency.