Harpold Road over Lost River
GoodKlamath County, Oregon · 0.5 MI S Bonanza · Structure no. 18669 109701488
- Built
- 1999
- 26 years old
- Condition
- Good
- inspected March 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 224 ft
- 3 main spans
- Daily traffic
- 761
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
Harpold Road over Lost River is a prestressed concrete box beam or girders - multiple carrying Harpold Road over Lost River in Klamath County, Oregon. It was built in 1999, so it is 26 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 761 vehicles a day, roughly 10% of them trucks, projected to reach 876 by 2025. The structure is 224 ft (68.4 m) long and 32 ft wide. If it were closed, the detour would be 4.3 mi (7 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 | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Harpold Road over Lost River built?
It was built in 1999, making it 26 years old in 2025.
What condition is Harpold Road over Lost River 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 March 2023.
How much traffic does Harpold Road over Lost River carry?
About 761 vehicles per day (2020 count), of which roughly 10% are trucks.
How long is Harpold Road over Lost River?
The structure is 224 ft (68.4 m) long with a longest span of 74 ft (22.6 m) and a deck 32 ft wide.
Who owns Harpold Road over Lost River?
It is owned by the County Highway Agency.