N.W. 185th Ave over Rock Creek
GoodWashington County, Oregon · 004 M I S Springville RD · Structure no. 671340025700107
- Built
- 1982
- 43 years old
- Condition
- Good
- inspected August 2024
- Type
- Slab
- Prestressed Concrete
- Length
- 60 ft
- 1 main span
- Daily traffic
- 4,587
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
N.W. 185th Ave over Rock Creek is a prestressed concrete slab carrying N.W. 185th Ave over Rock Creek in Washington County, Oregon. It was built in 1982, so it is 43 years old, younger than the Oregon average of 49.9 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 4,587 vehicles a day, roughly 5% of them trucks, projected to reach 5,192 by 2025. The structure is 60 ft (18.3 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| 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 N.W. 185th Ave over Rock Creek built?
It was built in 1982, making it 43 years old in 2025.
What condition is N.W. 185th Ave over Rock Creek in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2024.
How much traffic does N.W. 185th Ave over Rock Creek carry?
About 4,587 vehicles per day (2020 count), of which roughly 5% are trucks.
How long is N.W. 185th Ave over Rock Creek?
The structure is 60 ft (18.3 m) long with a longest span of 57 ft (17.4 m) and a deck 32 ft wide.
Who owns N.W. 185th Ave over Rock Creek?
It is owned by the County Highway Agency.