Interstate 80 over State Route 4 & Ramps
PoorContra Costa County, California · 04-CC-080-10.02-HER · Structure no. 28 0148
- Built
- 1958
- 67 years old
- Condition
- Poor
- inspected July 2023
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 444 ft
- 4 main spans
- Daily traffic
- 179,000
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 80 over State Route 4 & Ramps is a concrete continuous box beam or girders - multiple carrying Interstate 80 over State Route 4 & Ramps in Contra Costa County, California. It was built in 1958, so it is 67 years old, older than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 179,000 vehicles a day, roughly 5% of them trucks, projected to reach 243,773 by 2045. The structure is 444 ft (135.3 m) long and 117 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Interstate 80 over State Route 4 & Ramps built?
It was built in 1958, making it 67 years old in 2025.
What condition is Interstate 80 over State Route 4 & Ramps in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2023.
How much traffic does Interstate 80 over State Route 4 & Ramps carry?
About 179,000 vehicles per day (2019 count), of which roughly 5% are trucks.
How long is Interstate 80 over State Route 4 & Ramps?
The structure is 444 ft (135.3 m) long with a longest span of 115 ft (35.1 m) and a deck 117 ft wide.
Who owns Interstate 80 over State Route 4 & Ramps?
It is owned by the State Highway Agency.