On June 16, 2026, a multi-vehicle traffic collision involving approximately six vehicles occurred on State Route 4, including several sedans, an SUV, a work truck, and a tractor-trailer. The accident resulted in minor injuries, with at least one person reported trapped in a vehicle. The tractor-trailer was leaking an unknown fluid and sustained a flat tire. The incident caused significant traffic disruptions, leading to the closure of the Balfour Road on-ramp to the eastbound lanes and the temporary closure of both eastbound and westbound lanes of SR 4 between Balfour Road and Marsh Creek. A SigAlert was issued and later cancelled once all lanes were reopened around 7:46 AM.
Original Log
Jun 16 2026 6:35AM: [9] [Appended, 06:36:35] [1] 4 VEHICLE TRAFFIC COLLISION
Jun 16 2026 6:35AM: [10] [Appended, 06:36:35] [2] Grey Honda 4D VERSUS WHITE SEDAN (4 DOOR CAR) VERSUS SUV VERSUS WORK TRUCK
Jun 16 2026 6:36AM: [11] [Appended, 06:36:35] [3] 1125 WEST BOUND LNS
Jun 16 2026 6:36AM: [12] [Appended, 06:36:35] [4] SOMEONE TRAPPED IN THE VEHICLE
Jun 16 2026 6:37AM: [21] [Appended, 06:39:30] [1] WHITE Toyota CAM VERSUS BLACK SEDAN (4 DOOR CAR) VERSUS WHITE “BIG RIG, 18 WHEELER, TRACTOR TRUCK”
Jun 16 2026 6:37AM: [22] [Appended, 06:39:30] [2] BLKG SLOW LANE
Jun 16 2026 6:37AM: [18] PER INVLD APPRX 5 VEHICLES INVLD [Shared]
Jun 16 2026 6:38AM: [38] [Appended, 06:41:09] [3] Grey SUBA CROSSTREC VERSUS UNKNOWN
Jun 16 2026 6:38AM: [25] [Appended, 06:39:30] [5] REPORTING PARTY – OR – RESPONSIBLE PARTY’S VEHICLE NOT DRIVABLE
Jun 16 2026 6:39AM: [26] [Appended, 06:39:30] [6] “BIG RIG, 18 WHEELER, TRACTOR TRUCK” LEAKING UNKNOWN FLUID
Jun 16 2026 6:39AM: [31] BLKG BOTH LANES – APPEARS LIKE 2 HEAD ONS [Shared]
Jun 16 2026 6:39AM: [32] 6 VEHICLES INVD [Shared]
Jun 16 2026 6:40AM: [33] PER ANOTHER -4 SEDAN (4 DOOR CAR) , VERSUS PICK-UP TRUCK VERSUS WORK TRUCK [Shared]
Jun 16 2026 6:40AM: [35] MESSAGE OR ITEM DELIVERED 141 AND FIRE DEPARTMENT [Shared]
Jun 16 2026 6:51AM: [43] A19-405A REQUEST – OR – REQUIRED TOW TRUCK X3 LBL SUBA MAJ FE /Toyota SEDAN (4 DOOR CAR) MAJ FE / silver SEDAN (4 DOOR CAR) MAJ FE [Shared]
Jun 16 2026 6:51AM: [44] A19-405A 4 VEHICLE 1181 FOR NOW [Shared]
Jun 16 2026 6:53AM: [45] [Rotation Request Comment] MESSAGE OR ITEM DELIVERED BAY POINT TOW 925-682-5920 SUBA [Shared]
Jun 16 2026 6:54AM: [46] A19-405A REQUEST – OR – REQUIRED TOW TRUCK MEDICAL DUTY “BIG RIG, 18 WHEELER, TRACTOR TRUCK” 30 FLAT TIRE FLATBED TOW TRUCK TRAILER BAD ORDER (NOT FUNCTIONING) LFT REAR TIRE EMPTY APPROX 20 FLAT TIRE UP EMBANKMENT [Shared]
Jun 16 2026 6:54AM: [47] [Rotation Request Comment] MESSAGE OR ITEM DELIVERED FERNANDES M TOW 925-458-4400 Toyota [Shared]
Jun 16 2026 6:55AM: [48] A19-404A REQUEST – OR – REQUIRED BTWD POLICE DEPARTMENT SHUT DOWN BALFOUR ON RAMP TO EAST BOUND 4 UNKNOWN ETO [Shared]
Jun 16 2026 6:57AM: [49] [Rotation Request Comment] 1021 PIZZAGONIS TOW NEG TRUCK AVAIL [Shared]
Jun 16 2026 6:57AM: [50] [Rotation Request Comment] MESSAGE OR ITEM DELIVERED ARROWHEAD TOW 800-750-6539 silver SEDAN (4 DOOR CAR) [Shared]
Jun 16 2026 6:59AM: [52] [Rotation Request Comment] MESSAGE OR ITEM DELIVERED ARROWHEAD TOW 800-750-6539 HEAVY DUTY 97 [Shared]
Jun 16 2026 7:01AM: [53] MESSAGE OR ITEM DELIVERED BTWD POLICE DEPARTMENT [Shared]
Jun 16 2026 7:10AM: [57] 19-S1 REQUEST – OR – REQUIRED SIG ALERT SR4 BYPASS between BALFOUR and MARSH CREEK SHUT DOWN EAST BOUND and WEST BOUND ETO 1 HR [Shared]
Jun 16 2026 7:11AM: [58] MESSAGE OR ITEM DELIVERED DOTCC [Shared]
Jun 16 2026 7:12AM: [60] [Notification] [CHP]-^***ISSUE SIGALERT*** EASTBOUND AND WESTBOUND SR4 CLOSED BETWEEN BALFOUR ROAD AND MARSH CREEK DUE TO A CRASH. UNKNOWN ETO. EXPECT DELAYS. [Shared]
Jun 16 2026 7:13AM: [61] MESSAGE OR ITEM DELIVERED BTWD POLICE DEPARTMENT DISREGARD [Shared]
Jun 16 2026 7:33AM: [63] BAYPOINT ADVD 97 IN AREA BUT TRFC SHERIFF’S DEPARTMENT HEAVY UNABLE TO GET THROUGH ON RIGHT HAND SHOULDER
Jun 16 2026 7:33AM: [64] 19-405 BAY POINT CAN GO WRONG WAY //WEST BOUND TRFC BLKD
Jun 16 2026 7:33AM: [65] MESSAGE OR ITEM DELIVERED BAY POINT TOW
Jun 16 2026 7:40AM: [68] A19-405A WEST BOUND LNS OPEN
Jun 16 2026 7:43AM: [69] A19-405A EAST BOUND LNS OPEN
Jun 16 2026 7:44AM: [70] A19-405A DISREGARD SIG ALERT
Jun 16 2026 7:46AM: [71] [Notification] [CHP]-^***CANCEL SIGALERT*** ALL LANES OPEN. [Shared]
Jun 16 2026 7:50AM: [72] A19-405A 4 VEHICLE 1181 [Shared]
Jun 16 2026 7:50AM: [75] [Notification] [CHP]-Problem changed from Traffic Collision ( Injuries Unknown ) to Traffic Collision ( Minor Injuries ) by CHP [Shared]