Harmony RD over HWY 171
FairClackamas County, Oregon · 3.0 MI SE of Milwaukie Cc · Structure no. 09623 171C00242
- Built
- 1970
- 55 years old
- Condition
- Fair
- inspected August 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 291 ft
- 2 main spans
- Daily traffic
- 1,693
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Harmony RD over HWY 171 is a prestressed concrete continuous box beam or girders - multiple carrying Harmony RD over HWY 171 in Clackamas County, Oregon. It was built in 1970, so it is 55 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 1,693 vehicles a day, roughly 4% of them trucks, projected to reach 35,900 by 2040. The structure is 291 ft (88.7 m) long and 69 ft wide.
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 Harmony RD over HWY 171 built?
It was built in 1970, making it 55 years old in 2025.
What condition is Harmony RD over HWY 171 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 August 2023.
How much traffic does Harmony RD over HWY 171 carry?
About 1,693 vehicles per day (2022 count), of which roughly 4% are trucks.
How long is Harmony RD over HWY 171?
The structure is 291 ft (88.7 m) long with a longest span of 163 ft (49.7 m) and a deck 69 ft wide.
Who owns Harmony RD over HWY 171?
It is owned by the State Highway Agency.