Advisory
N. Main St between Cypress and Mt. Diablo is now OPEN.
N. Main St between Cypress and Mt. Diablo is now OPEN. 
UPDATE: Road is now OPEN.
The Walnut Creek Police Department advises you to AVOID N. Main Street from Cypress to Mt. Diablo in both directions due to a current traffic issue.
The estimated time for the closure is 30 minutes.
Address/Location
Walnut Creek Police Department
1666 N Main St
Walnut Creek, CA 94596
Contact
Emergency: 9-1-1
Non-emergencies: 925-943-5844