Tyrone Road over Tyrone Gulch Creek
FairSonoma County, California · 1.8 MI S/O Monte Rio · Structure no. 20C0532
- Built
- 2004
- 21 years old
- Condition
- Fair
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 25 ft
- 1 main span
- Daily traffic
- 150
- 2015 count
- Owner
- County
- County Highway Agency
About this bridge
Tyrone Road over Tyrone Gulch Creek is a steel stringer/multi-beam or girder carrying Tyrone Road over Tyrone Gulch Creek in Sonoma County, California. It was built in 2004, so it is 21 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 150 vehicles a day, roughly 3% of them trucks, projected to reach 272 by 2042. The structure is 25 ft (7.6 m) long and 18 ft wide. If it were closed, the detour would be 1.9 mi (3 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. |
| Channel and channel protection | 9 Excellent | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Tyrone Road over Tyrone Gulch Creek built?
It was built in 2004, making it 21 years old in 2025.
What condition is Tyrone Road over Tyrone Gulch 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 November 2024.
How much traffic does Tyrone Road over Tyrone Gulch Creek carry?
About 150 vehicles per day (2015 count), of which roughly 3% are trucks.
How long is Tyrone Road over Tyrone Gulch Creek?
The structure is 25 ft (7.6 m) long with a longest span of 25 ft (7.5 m) and a deck 18 ft wide.
Who owns Tyrone Road over Tyrone Gulch Creek?
It is owned by the County Highway Agency.