Middle Terrace over Hillside
FairSonoma County, California · Just S Starrett Hill DR · Structure no. 20C0425
- Built
- 1980
- 45 years old, rebuilt 2004
- Condition
- Fair
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 38 ft
- 2 main spans
- Daily traffic
- 200
- 2015 count
- Owner
- County
- County Highway Agency
About this bridge
Middle Terrace over Hillside is a steel stringer/multi-beam or girder carrying Middle Terrace over Hillside in Sonoma County, California. It was built in 1980 and reconstructed in 2004, so it is 45 years old, younger 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 200 vehicles a day, roughly 1% of them trucks, projected to reach 217 by 2042. The structure is 38 ft (11.6 m) long and 15 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 | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Middle Terrace over Hillside built?
It was built in 1980, making it 45 years old in 2025. It was reconstructed in 2004.
What condition is Middle Terrace 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 Middle Terrace over Hillside carry?
About 200 vehicles per day (2015 count), of which roughly 1% are trucks.
How long is Middle Terrace over Hillside?
The structure is 38 ft (11.6 m) long with a longest span of 19 ft (5.8 m) and a deck 15 ft wide.
Who owns Middle Terrace over Hillside?
It is owned by the County Highway Agency.