Accident High Active

CHP : Residual delays on CA-4 Eastbound exiting at Arnold Industrial Pl (Concord). Off Ramp affected. Expect delays.

Road

Area

Started

Apr 12, 11:47 AM

Last Seen

3 minutes ago

Coordinates

38.0006, -122.0541

Update History

5 observations

CHP : Residual delays on CA-4 Eastbound exiting at Arnold Industrial Pl (Concord). Off Ramp affected. Expect delays. Apr 12, 1:30 PM

CHP : Traffic Collision on CA-4 Eastbound west of Arnold Industrial Pl (Concord). Right lanes blocked. Expect delays. Apr 12, 12:00 PM

CHP : Traffic Collision on CA-4 Eastbound west of Arnold Industrial Pl (Concord). Lane blocked. Expect delays. Apr 12, 11:45 AM

CHP : Traffic Collision on CA-4 Eastbound west of I-680 N (Martinez). Lane blocked. Expect delays. Apr 12, 11:30 AM

CHP : Traffic Collision on CA-4 Westbound east of I-680 N (Martinez). Lane blocked. Expect delays. Apr 12, 11:15 AM

Source: 511_sfbay · ID 511.org/1480374 First seen Apr 12, 2026 11:15 AM