Trail Fork Road over Thirtymile Creek
FairGilliam County, Oregon · 2.5 MI E of HWY 19 · Structure no. 21C14 611 00800
- Built
- 1957
- 68 years old
- Condition
- Fair
- inspected July 2023
- Type
- Tee Beam
- Concrete Continuous
- Length
- 63 ft
- 3 main spans
- Daily traffic
- 36
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
Trail Fork Road over Thirtymile Creek is a concrete continuous tee beam carrying Trail Fork Road over Thirtymile Creek in Gilliam County, Oregon. It was built in 1957, so it is 68 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 5 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 36 vehicles a day, roughly 10% of them trucks, projected to reach 41 by 2025. The structure is 63 ft (19.2 m) long and 29 ft wide. If it were closed, the detour would be 16.2 mi (26 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Trail Fork Road over Thirtymile Creek built?
It was built in 1957, making it 68 years old in 2025.
What condition is Trail Fork Road over Thirtymile Creek 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 July 2023.
How much traffic does Trail Fork Road over Thirtymile Creek carry?
About 36 vehicles per day (2020 count), of which roughly 10% are trucks.
How long is Trail Fork Road over Thirtymile Creek?
The structure is 63 ft (19.2 m) long with a longest span of 42 ft (12.8 m) and a deck 29 ft wide.
Who owns Trail Fork Road over Thirtymile Creek?
It is owned by the County Highway Agency.