Headline: Major traffic congestion near Highland Ave (Underpass) (CA-210) and CA-18 / Waterman Ave (CA-210) Severity: Major Type: JAM Location: Highland Ave (Underpass) (CA-210) and CA-18 / Waterman Ave (CA-210) From: Highland Ave (Underpass) (CA-210) To: CA-18/Waterman Ave (CA-210) Coordinates: 34.14549, -117.31563 Started: 2026-06-11T21:39:15.000Z Ended: 2026-06-12T01:59:35.000Z Last reported: 2026-06-12T00:39:13.688Z Description: Stopped traffic. Accident Source: CrashStory.com Canonical: https://crashstory.com/incidents/TTI-aa29faee-ea81-414f-a083-0442b432d6c4-TTL16674247332001002--major-highland-ave-underpass-ca-210-18-waterman-ave-traffic-congestion/ JSON: https://crashstory-api-production.up.railway.app/api/incidents/TTI-aa29faee-ea81-414f-a083-0442b432d6c4-TTL16674247332001002