The big rig is on the southbound side of Highway 288, blocking all lanes between Southmore and the South loop. Drivers are exiting 610 eastbound to Scott or Cullen down to Bellfort or Reed Road.
We don't know what caused the rig to overturn or how long it will be there. Stay with Eyewitness News and abc13.com for the very latest on the closure.
Check real-time traffic information in our ABC13.com traffic section
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