State Route 4 WB over Morello Ave
FairContra Costa County, California · 04-CC-004-R10.33-MTZ · Structure no. 28 0218L
- Built
- 1975
- 50 years old
- Condition
- Fair
- inspected June 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 176 ft
- 1 main span
- Daily traffic
- 31,000
- 2018 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 4 WB over Morello Ave is a prestressed concrete box beam or girders - multiple carrying State Route 4 WB over Morello Ave in Contra Costa County, California. It was built in 1975, so it is 50 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 63,819 by 2042. The structure is 176 ft (53.6 m) long and 65 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 Morello Ave built?
It was built in 1975, making it 50 years old in 2025.
What condition is State Route 4 WB over Morello Ave 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 Morello Ave carry?
About 31,000 vehicles per day (2018 count), of which roughly 7% are trucks.
How long is State Route 4 WB over Morello Ave?
The structure is 176 ft (53.6 m) long with a longest span of 176 ft (53.6 m) and a deck 65 ft wide.
Who owns State Route 4 WB over Morello Ave?
It is owned by the State Highway Agency.