All westbound lanes of Bringelly Road are closed at Leppington due to a serious two car crash between Camden Valley Way and Cowpasture Road.
Westbound motorists should use Camden Valley Way and Cowpasture Road near Denham Court instead.
Eastbound traffic on Bringelly Road is able to pass the crash site.
Emergency services and traffic crews are on site.
For the latest traffic information, download the Live Traffic NSW app, visit www.livetraffic.com or call 132 701.