State Route 12 over Well Creek
FairSolano County, California · 04-SOL-012-22.91 · Structure no. 23 0022
- Built
- 1918
- 107 years old, rebuilt 2015
- Condition
- Fair
- inspected April 2024
- Type
- Culvert
- Concrete Continuous
- Length
- 23 ft
- 2 main spans
- Daily traffic
- 16,700
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 12 over Well Creek is a concrete continuous culvert carrying State Route 12 over Well Creek in Solano County, California. It was built in 1918 and reconstructed in 2015, so it is 107 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 16,700 vehicles a day, roughly 10% of them trucks, projected to reach 27,804 by 2046. The structure is 23 ft (7 m) long and 50 ft wide. If it were closed, the detour would be 31.7 mi (51 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 |
|---|---|---|
| Channel and channel protection | 8 Very Good | No problems noted. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 12 over Well Creek built?
It was built in 1918, making it 107 years old in 2025. It was reconstructed in 2015.
What condition is State Route 12 over Well 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 April 2024.
How much traffic does State Route 12 over Well Creek carry?
About 16,700 vehicles per day (2009 count), of which roughly 10% are trucks.
How long is State Route 12 over Well Creek?
The structure is 23 ft (7 m) long with a longest span of 10 ft (3 m) and a deck 50 ft wide.
Who owns State Route 12 over Well Creek?
It is owned by the State Highway Agency.