Or 140 (hwy 431) over Twentymile Creek
FairPosted for loadLake County, Oregon · 046 MI E Adel · Structure no. 09538 431 03278
- Built
- 1966
- 59 years old
- Condition
- Fair
- inspected May 2024
- Type
- Slab
- Prestressed Concrete
- Length
- 104 ft
- 4 main spans
- Daily traffic
- 308
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Or 140 (hwy 431) over Twentymile Creek is a prestressed concrete slab carrying Or 140 (hwy 431) over Twentymile Creek in Lake County, Oregon. It was built in 1966, so it is 59 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. Its operating status is: posted for other load-capacity restriction.
It carries about 308 vehicles a day, roughly 35% of them trucks, projected to reach 320 by 2042. The structure is 104 ft (31.7 m) long and 33 ft wide. If it were closed, the detour would be 123.7 mi (199 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| 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 Or 140 (hwy 431) over Twentymile Creek built?
It was built in 1966, making it 59 years old in 2025.
What condition is Or 140 (hwy 431) over Twentymile 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 May 2024.
How much traffic does Or 140 (hwy 431) over Twentymile Creek carry?
About 308 vehicles per day (2022 count), of which roughly 35% are trucks.
How long is Or 140 (hwy 431) over Twentymile Creek?
The structure is 104 ft (31.7 m) long with a longest span of 26 ft (7.9 m) and a deck 33 ft wide.
Who owns Or 140 (hwy 431) over Twentymile Creek?
It is owned by the State Highway Agency.