On June 22, 2026, a multi-vehicle collision involving several 18-wheeler tractor trucks occurred on the northbound lanes of Interstate 15 near the Old State Route 58 off ramp. The incident involved one truck rear-ending another, and a vehicle striking an overcrossing. One person was reported pinned inside a truck. A tanker carrying 45,000 lbs of caustic soda was involved; while the driver reported the material as toxic, the Office of Emergency Services and Caltrans worked to contain the spill and confirmed that the caustic soda was not released. Two heavy-duty tow trucks were requested and a SIG Alert was issued due to heavy traffic backups extending to Main Street. The number one lane was temporarily shut down for cleanup and recovery.
Original Log
Jun 22 2026 2:56PM: [2] [Appended, 14:56:56] [1] “BIG RIG, 18 WHEELER, TRACTOR TRUCK” TRUCK REAR ENDED ANOTHER “BIG RIG, 18 WHEELER, TRACTOR TRUCK” TRUCK BLKING RIGHT LANE
Jun 22 2026 2:56PM: [1] BIG RIG POSSIBLE – OR – POSSESSION STRUCK THE BRIDGE
Jun 22 2026 2:56PM: [4] [Appended, 14:56:56] [3] MESSAGE OR ITEM DELIVERED BPD
Jun 22 2026 2:56PM: [5] [Appended, 14:56:56] [4] 73-72 “BIG RIG, 18 WHEELER, TRACTOR TRUCK” TRUCK INTO OVER CROSSING NORTH BOUND 15
Jun 22 2026 2:57PM: [7] [Notification] [CHP]-Problem changed from Traffic Collision ( Injuries Unknown ) to Traffic Collision – Ambulance En Route by CHP [Shared]
Jun 22 2026 2:59PM: [14] MESSAGE OR ITEM DELIVERED BPD REFERENCE LINE 10 [Shared]
Jun 22 2026 3:00PM: [17] A73-047 MUTLI “BIG RIG, 18 WHEELER, TRACTOR TRUCK” TRKS INVOL [Shared]
Jun 22 2026 3:01PM: [19] A73-047 REQUEST – OR – REQUIRED CALIFORNIA DEPARTMENT OF TRANSPORTATION (CALTRANS) TO CLOSE [Shared]
Jun 22 2026 3:01PM: [20] #2 LANE [Shared]
Jun 22 2026 3:04PM: [22] A73-047 4500 LB TANKER 1824 / DRIVER ADVS TOXIC BUT NOT LEAKING // S4 CPZ REQUEST – OR – REQUIRED 2 TOW TRUCK “BIG RIG, 18 WHEELER, TRACTOR TRUCK” TRKS WILL [Shared]
Jun 22 2026 3:04PM: [23] 73-72 ONE PTY IN THE “BIG RIG, 18 WHEELER, TRACTOR TRUCK” TRUCK PINNED IN THE VEHICLE [Shared]
Jun 22 2026 3:05PM: [24] [Notification] [CHP]-10-39 8-633 CELL, ADVISED ESTIMATED TIME OF ARRIVAL 45 MIN [Shared]
Jun 22 2026 3:05PM: [25] MESSAGE OR ITEM DELIVERED BPD [Shared]
Jun 22 2026 3:09PM: [27] [Rotation Request Comment] MESSAGE OR ITEM DELIVERED G AND M TOWING 760-244-1868 EN ROUTE WITH 2 TOW TRUCK HD
[Shared]
Jun 22 2026 3:38PM: [36] 73-S4 REQUEST – OR – REQUIRED OFFICE OF EMERGENCY SERVICES INTO DIRT / NEG WATER WAYS CALIFORNIA DEPARTMENT OF TRANSPORTATION (CALTRANS) WORKING ON CLEAN UP / SPILL CONTAINED [Shared]
Jun 22 2026 3:52PM: [38] MESSAGE OR ITEM DELIVERED OFFICE OF EMERGENCY SERVICES // #26-3138 [Shared]
Jun 22 2026 3:58PM: [39] GandM LANDLINE ADVS DRVR INTERSECTION 97 JUST STUCK IN TRFC [Shared]
Jun 22 2026 3:58PM: [40] [Notification] [CHP]-[39] GandM LANDLINE ADVS DRVR INTERSECTION 97 JUST STUCK IN TRFC [Shared] [Shared]
Jun 22 2026 5:11PM: [44] 73-S4 LANDLINE ADVS TO UPDATE OFFICE OF EMERGENCY SERVICES WITH 45000 LBS OF KAUSTIC SODA NON RELEASED // MESSAGE OR ITEM DELIVERED OFFICE OF EMERGENCY SERVICES
Jun 22 2026 8:38PM: [47] C73-013 CONFIRM WHICH HOSP PRTY OO TRAFFIC COLLISION ON 58 WENT TO
Jun 22 2026 8:40PM: [49] 73-S5 OUT WITH 13 // SIG ALERT HVY TRFC BACK UP TO MAIN ST
Jun 22 2026 10:16PM: [52] C73-013 WILL HAVE #1 LANE TEMP SHUT DOWN
Jun 22 2026 10:18PM: [53] C73-013 #1 LANE BACK ON