State Route 4 WB over Bailey Road
FairContra Costa County, California · 04-CC-004-R20.10 · Structure no. 28 0203L
- Built
- 1995
- 30 years old
- Condition
- Fair
- inspected May 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 132 ft
- 1 main span
- Daily traffic
- 63,500
- 2017 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 4 WB over Bailey Road is a prestressed concrete box beam or girders - multiple carrying State Route 4 WB over Bailey Road in Contra Costa County, California. It was built in 1995, so it is 30 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 63,500 vehicles a day, roughly 6% of them trucks, projected to reach 106,788 by 2045. The structure is 132 ft (40.3 m) long and 84 ft wide. If it were closed, the detour would be 0.6 mi (1 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 | 7 Good | Some minor problems. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 4 WB over Bailey Road built?
It was built in 1995, making it 30 years old in 2025.
What condition is State Route 4 WB over Bailey Road 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 2023.
How much traffic does State Route 4 WB over Bailey Road carry?
About 63,500 vehicles per day (2017 count), of which roughly 6% are trucks.
How long is State Route 4 WB over Bailey Road?
The structure is 132 ft (40.3 m) long with a longest span of 130 ft (39.6 m) and a deck 84 ft wide.
Who owns State Route 4 WB over Bailey Road?
It is owned by the State Highway Agency.