Forest Road 300 over Parlin Creek
FairMendocino County, California · By JCT RD 320 & RD 340 · Structure no. 10F0058
- Built
- 1958
- 67 years old, rebuilt 2021
- Condition
- Fair
- inspected May 2023
- Type
- Slab
- Prestressed Concrete
- Length
- 53 ft
- 1 main span
- Daily traffic
- 50
- 2009 count
- Owner
- State
- State Park, Forest, or Reservation Agency
About this bridge
Forest Road 300 over Parlin Creek is a prestressed concrete slab carrying Forest Road 300 over Parlin Creek in Mendocino County, California. It was built in 1958 and reconstructed in 2021, so it is 67 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 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 50 vehicles a day, roughly 2% of them trucks, projected to reach 65 by 2043. The structure is 53 ft (16.2 m) long and 16 ft wide. If it were closed, the detour would be 0.6 mi (1 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 Forest Road 300 over Parlin Creek built?
It was built in 1958, making it 67 years old in 2025. It was reconstructed in 2021.
What condition is Forest Road 300 over Parlin 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 2023.
How much traffic does Forest Road 300 over Parlin Creek carry?
About 50 vehicles per day (2009 count), of which roughly 2% are trucks.
How long is Forest Road 300 over Parlin Creek?
The structure is 53 ft (16.2 m) long with a longest span of 50 ft (15.2 m) and a deck 16 ft wide.
Who owns Forest Road 300 over Parlin Creek?
It is owned by the State Park, Forest, or Reservation Agency.