The Mercury has more.
12.30PM UPDATE: One driver has been transported to hospital in a critical condition. Tow trucks have been called to the scene but at this stage the highway remains closed at Lawitta.
1.30PM UPDATE: The road is now open to all traffic.
3.30PM UPDATE: Sadly the Lawitta crash has resulted in a fatality. Police say an 89-year-old man from Hayes died in hospital from his injuries. A 76-year-old man from Maydena is receiving treatment for leg injuries. Police say they will issue a statement later today. Condolences to all involved.