Moscow Road over Hillside
FairSonoma County, California · 1.85 MI NE of SR 116 · Structure no. 20C0389
- Built
- 1960
- 65 years old
- Condition
- Fair
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 99 ft
- 5 main spans
- Daily traffic
- 700
- 2015 count
- Owner
- County
- County Highway Agency
About this bridge
Moscow Road over Hillside is a steel stringer/multi-beam or girder carrying Moscow Road over Hillside in Sonoma County, California. It was built in 1960, so it is 65 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 700 vehicles a day, roughly 2% of them trucks, projected to reach 981 by 2042. The structure is 99 ft (30.2 m) long and 13 ft wide. If it were closed, the detour would be 8.7 mi (14 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Moscow Road over Hillside built?
It was built in 1960, making it 65 years old in 2025.
What condition is Moscow Road over Hillside 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 November 2024.
How much traffic does Moscow Road over Hillside carry?
About 700 vehicles per day (2015 count), of which roughly 2% are trucks.
How long is Moscow Road over Hillside?
The structure is 99 ft (30.2 m) long with a longest span of 20 ft (6.1 m) and a deck 13 ft wide.
Who owns Moscow Road over Hillside?
It is owned by the County Highway Agency.