State Route 242 over Concord Avenue
PoorContra Costa County, California · 04-CC-242-R1.47-CND · Structure no. 28 0185
- Built
- 1963
- 62 years old, rebuilt 2000
- Condition
- Poor
- inspected January 2024
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 158 ft
- 3 main spans
- Daily traffic
- 100,000
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 242 over Concord Avenue is a concrete continuous box beam or girders - multiple carrying State Route 242 over Concord Avenue in Contra Costa County, California. It was built in 1963 and reconstructed in 2000, so it is 62 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 100,000 vehicles a day, roughly 5% of them trucks, projected to reach 164,317 by 2042. The structure is 158 ft (48.2 m) long and 113 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 242 over Concord Avenue built?
It was built in 1963, making it 62 years old in 2025. It was reconstructed in 2000.
What condition is State Route 242 over Concord Avenue 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 January 2024.
How much traffic does State Route 242 over Concord Avenue carry?
About 100,000 vehicles per day (2009 count), of which roughly 5% are trucks.
How long is State Route 242 over Concord Avenue?
The structure is 158 ft (48.2 m) long with a longest span of 84 ft (25.6 m) and a deck 113 ft wide.
Who owns State Route 242 over Concord Avenue?
It is owned by the State Highway Agency.