State Route 4 WB over Port Chicago HWY
FairContra Costa County, California · 04-CC-004-R15.42-CND · Structure no. 28 0244L
- Built
- 1976
- 49 years old
- Condition
- Fair
- inspected May 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 227 ft
- 1 main span
- Daily traffic
- 73,000
- 2017 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 4 WB over Port Chicago HWY is a prestressed concrete box beam or girders - multiple carrying State Route 4 WB over Port Chicago HWY in Contra Costa County, California. It was built in 1976, so it is 49 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 6 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 73,000 vehicles a day, roughly 7% of them trucks, projected to reach 97,882 by 2045. The structure is 227 ft (69.2 m) long and 78 ft wide.
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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 4 WB over Port Chicago HWY built?
It was built in 1976, making it 49 years old in 2025.
What condition is State Route 4 WB over Port Chicago HWY 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 Port Chicago HWY carry?
About 73,000 vehicles per day (2017 count), of which roughly 7% are trucks.
How long is State Route 4 WB over Port Chicago HWY?
The structure is 227 ft (69.2 m) long with a longest span of 189 ft (57.6 m) and a deck 78 ft wide.
Who owns State Route 4 WB over Port Chicago HWY?
It is owned by the State Highway Agency.