Airport RD over Nine Mile Slough
GoodHarney County, Oregon · 008 JCT or 78 · Structure no. 20934 C11500081
- Built
- 2009
- 16 years old
- Condition
- Good
- inspected September 2024
- Type
- Slab
- Prestressed Concrete
- Length
- 52 ft
- 1 main span
- Daily traffic
- 264
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
Airport RD over Nine Mile Slough is a prestressed concrete slab carrying Airport RD over Nine Mile Slough in Harney County, Oregon. It was built in 2009, so it is 16 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 264 vehicles a day, roughly 10% of them trucks, projected to reach 304 by 2025. The structure is 52 ft (15.9 m) long and 32 ft wide. If it were closed, the detour would be 2.5 mi (4 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 | 8 Very Good | No problems noted. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Airport RD over Nine Mile Slough built?
It was built in 2009, making it 16 years old in 2025.
What condition is Airport RD over Nine Mile Slough 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 September 2024.
How much traffic does Airport RD over Nine Mile Slough carry?
About 264 vehicles per day (2020 count), of which roughly 10% are trucks.
How long is Airport RD over Nine Mile Slough?
The structure is 52 ft (15.9 m) long with a longest span of 51 ft (15.5 m) and a deck 32 ft wide.
Who owns Airport RD over Nine Mile Slough?
It is owned by the County Highway Agency.