N680-N242 Connectr over Walnut Creek
PoorContra Costa County, California · 04-CC-680-R18.70-CND · Structure no. 28 0040G
- Built
- 1963
- 62 years old, rebuilt 1998
- Condition
- Poor
- inspected January 2025
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 613 ft
- 7 main spans
- Daily traffic
- 63,800
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
N680-N242 Connectr over Walnut Creek is a concrete continuous box beam or girders - multiple carrying N680-N242 Connectr over Walnut Creek in Contra Costa County, California. It was built in 1963 and reconstructed in 1998, 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 63,800 vehicles a day, roughly 8% of them trucks, projected to reach 74,600 by 2045. The structure is 613 ft (186.8 m) long and 54 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was N680-N242 Connectr over Walnut Creek built?
It was built in 1963, making it 62 years old in 2025. It was reconstructed in 1998.
What condition is N680-N242 Connectr over Walnut Creek 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 2025.
How much traffic does N680-N242 Connectr over Walnut Creek carry?
About 63,800 vehicles per day (2019 count), of which roughly 8% are trucks.
How long is N680-N242 Connectr over Walnut Creek?
The structure is 613 ft (186.8 m) long with a longest span of 90 ft (27.4 m) and a deck 54 ft wide.
Who owns N680-N242 Connectr over Walnut Creek?
It is owned by the State Highway Agency.