UPDATE: Police have confirmed two men are deceased after a crash on the Bussell Highway on Sunday November 25.
The vehicle was travelling northbound between between Busselton and Capel when the car hit a bridge railing around 6am.
The vehicle has since been recovered and police media believe the stretch of road is open to traffic again.
Bussell Highway between Busselton and Capel is currently closed following a serious crash this morning.
Police have asked for patience and have advised road users to go via Capel to Bunbury or Perth.
The section closed is northbound from Bentley Drive, Capel.
Traffic is being diverted via Boyanup.
The crash occurred around 6am. Major Crash are on the scene.