State Route 4 WB over W4-S242 Connector Ramp
FairContra Costa County, California · 04-CC-004-R14.64-CND · Structure no. 28 0243L
- Built
- 1978
- 47 years old
- Condition
- Fair
- inspected June 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 448 ft
- 3 main spans
- Daily traffic
- 31,000
- 2018 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 4 WB over W4-S242 Connector Ramp is a prestressed concrete continuous box beam or girders - multiple carrying State Route 4 WB over W4-S242 Connector Ramp in Contra Costa County, California. It was built in 1978, so it is 47 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 31,000 vehicles a day, roughly 7% of them trucks, projected to reach 62,350 by 2042. The structure is 448 ft (136.6 m) long and 54 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 4 WB over W4-S242 Connector Ramp built?
It was built in 1978, making it 47 years old in 2025.
What condition is State Route 4 WB over W4-S242 Connector Ramp 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 June 2024.
How much traffic does State Route 4 WB over W4-S242 Connector Ramp carry?
About 31,000 vehicles per day (2018 count), of which roughly 7% are trucks.
How long is State Route 4 WB over W4-S242 Connector Ramp?
The structure is 448 ft (136.6 m) long with a longest span of 219 ft (66.6 m) and a deck 54 ft wide.
Who owns State Route 4 WB over W4-S242 Connector Ramp?
It is owned by the State Highway Agency.