Big Rig Overturned on Northbound Highway 99 at Avenue 7

On July 3, 2026, an overturned big rig resulting from a traffic collision involving a wrong-way vehicle blocked all northbound lanes of Highway 99 at the Avenue 7 on-ramp. Emergency services, including EMS and the Sheriff's Department, responded to the scene. All northbound traffic was diverted off the highway at Avenue 7, and approximately 10 Sheriff's Department vehicles blocked the southbound number one lane. Salvage operations were performed by various towing companies. Caltrans and media were also present on the scene.

Original Log

Jul 3 2026 6:18AM: [1] OPEN LINE LINE

Jul 3 2026 6:19AM: [7] PER MRA SHERIFF’S DEPARTMENT ALL LANES BLOCKED

Jul 3 2026 6:19AM: [8] MESSAGE OR ITEM DELIVERED EMS

Jul 3 2026 6:22AM: [11] A66-040 TOW TRUCK

Jul 3 2026 6:23AM: [12] MRA SHERIFF’S DEPARTMENT 97 ADVD ALL TRFC BEING TAKEN OFF NORTH BOUND 99 AT AVENUE 7 / UNKNOWN INJS

Jul 3 2026 6:23AM: [13] [Rotation Request Comment] MESSAGE OR ITEM DELIVERED NICKS TOW 559-661-3729

Jul 3 2026 6:31AM: [21] A66-040 BIG RIG OVERTURNED’D BLOCKING NORTH BOUND

Jul 3 2026 6:31AM: [22] A66-040 APPROX 10 SHERIFF’S DEPARTMENT VEHICLES BLOCKING SOUTH BOUND #1 LANE FOR UNKNOWN REASONS

Jul 3 2026 6:34AM: [25] 40 REQUEST – OR – REQUIRED SALVAGE FOR BIG RIG

Jul 3 2026 6:35AM: [28] [Rotation Request Comment] MESSAGE OR ITEM DELIVERED EPPLER TOW 559-659-3939

Jul 3 2026 6:37AM: [29] A66-040 TRAFFIC COLLISION INVLD WRONG WAY VEHICLE

Jul 3 2026 6:37AM: [30] [Rotation Request Comment] MESSAGE OR ITEM DELIVERED HandM 559-613-8870

Jul 3 2026 6:38AM: [31] MESSAGE OR ITEM DELIVERED CALTRANS LINE 29

Jul 3 2026 6:58AM: [34] A66-030 MEDIA ON SCENE