State Route 128 over Sage Creek
FairNapa County, California · 04-NAP-128-11.26 · Structure no. 21 0074
- Built
- 1945
- 80 years old
- Condition
- Fair
- inspected April 2024
- Type
- Arch - Deck
- Concrete
- Length
- 23 ft
- 1 main span
- Daily traffic
- 2,125
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 128 over Sage Creek is a concrete arch - deck carrying State Route 128 over Sage Creek in Napa County, California. It was built in 1945, so it is 80 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 2,125 vehicles a day, projected to reach 3,061 by 2046. The structure is 23 ft (7 m) long. If it were closed, the detour would be 21.7 mi (35 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 |
|---|---|---|
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 128 over Sage Creek built?
It was built in 1945, making it 80 years old in 2025.
What condition is State Route 128 over Sage 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 128 over Sage Creek carry?
About 2,125 vehicles per day (2009 count).
How long is State Route 128 over Sage Creek?
The structure is 23 ft (7 m) long with a longest span of 21 ft (6.4 m).
Who owns State Route 128 over Sage Creek?
It is owned by the State Highway Agency.