Overview
- A single concrete-mixer 18-wheeler overturned into a ditch on westbound SH-99 at Cypress Rosehill early Monday, prompting a full closure of the westbound main lanes.
- Harris County Sheriff’s Office said the crash trapped the driver and deployed hazmat teams while Life Flight and other first responders worked on scene.
- Authorities have not released what caused the rollover or the extent and number of any injuries and investigators remained on site as crews worked to secure the scene.
- Houston TranStar and local agencies warned drivers to avoid the area and use alternate routes because the closure is causing significant delays on a major commuter corridor.
- The incident fits a broader pattern of heavy-truck rollovers in the region that often require hazmat response, extended lane closures, and crash reconstruction before officials can release final findings.