Fourth Ave over Murphy Creek
FairNapa County, California · 0.3 M S/O Coombsville RD · Structure no. 21C0123
- Built
- 1994
- 31 years old
- Condition
- Fair
- inspected May 2024
- Type
- Slab
- Concrete Continuous
- Length
- 38 ft
- 2 main spans
- Daily traffic
- 1,350
- 2012 count
- Owner
- County
- County Highway Agency
About this bridge
Fourth Ave over Murphy Creek is a concrete continuous slab carrying Fourth Ave over Murphy Creek in Napa County, California. It was built in 1994, so it is 31 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 1,350 vehicles a day, roughly 3% of them trucks, projected to reach 2,244 by 2044. The structure is 38 ft (11.7 m) long and 33 ft wide. If it were closed, the detour would be 5 mi (8 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Fourth Ave over Murphy Creek built?
It was built in 1994, making it 31 years old in 2025.
What condition is Fourth Ave over Murphy 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 May 2024.
How much traffic does Fourth Ave over Murphy Creek carry?
About 1,350 vehicles per day (2012 count), of which roughly 3% are trucks.
How long is Fourth Ave over Murphy Creek?
The structure is 38 ft (11.7 m) long with a longest span of 18 ft (5.5 m) and a deck 33 ft wide.
Who owns Fourth Ave over Murphy Creek?
It is owned by the County Highway Agency.