State Route 12 over Round Hill Creek
FairSolano County, California · 04-SOL-012-19.07 · Structure no. 23 0234
- Built
- 2003
- 22 years old
- Condition
- Fair
- inspected April 2024
- Type
- Slab
- Concrete
- Length
- 36 ft
- 1 main span
- Daily traffic
- 11,500
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 12 over Round Hill Creek is a concrete slab carrying State Route 12 over Round Hill Creek in Solano County, California. It was built in 2003, so it is 22 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 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 11,500 vehicles a day, roughly 11% of them trucks, projected to reach 19,708 by 2046. The structure is 36 ft (11 m) long and 68 ft wide. If it were closed, the detour would be 16.8 mi (27 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 9 Excellent | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 12 over Round Hill Creek built?
It was built in 2003, making it 22 years old in 2025.
What condition is State Route 12 over Round Hill 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 Round Hill Creek carry?
About 11,500 vehicles per day (2009 count), of which roughly 11% are trucks.
How long is State Route 12 over Round Hill Creek?
The structure is 36 ft (11 m) long with a longest span of 36 ft (11 m) and a deck 68 ft wide.
Who owns State Route 12 over Round Hill Creek?
It is owned by the State Highway Agency.