US Highway 101 SB over Orrs Creek
FairMendocino County, California · 01-MEN-101-R25.01-UKI · Structure no. 10 0194L
- Built
- 1964
- 61 years old
- Condition
- Fair
- inspected October 2024
- Type
- Slab
- Concrete Continuous
- Length
- 71 ft
- 3 main spans
- Daily traffic
- 10,450
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
US Highway 101 SB over Orrs Creek is a concrete continuous slab carrying US Highway 101 SB over Orrs Creek in Mendocino County, California. It was built in 1964, so it is 61 years old, older than the California average of 54.8 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 10,450 vehicles a day, roughly 11% of them trucks, projected to reach 13,405 by 2042. The structure is 71 ft (21.6 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 8 Very Good | No problems noted. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US Highway 101 SB over Orrs Creek built?
It was built in 1964, making it 61 years old in 2025.
What condition is US Highway 101 SB over Orrs 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 October 2024.
How much traffic does US Highway 101 SB over Orrs Creek carry?
About 10,450 vehicles per day (2009 count), of which roughly 11% are trucks.
How long is US Highway 101 SB over Orrs Creek?
The structure is 71 ft (21.6 m) long with a longest span of 28 ft (8.4 m) and a deck 40 ft wide.
Who owns US Highway 101 SB over Orrs Creek?
It is owned by the State Highway Agency.