A 51-year-old woman is dead after a crash on Highway 43 near Smiths Falls, Ont. (Facebook)

A 51-year-old woman is dead after a head-on collision Wednesday morning on County Road 43 just west of Smiths Falls.

Tracy Banks of Smiths Falls, Ont., was killed in the collision.

Ontario Provincial Police said the collision happened between a westbound grey KIA vehicle and an eastbound grey jeep at about 7:25 a.m.

The driver of the other vehicle, a 31-year-old man from Perth, Ont., had serious but not life-threatening injuries.

Highway 43 remains closed while OPP investigate the cause of the collision. Police are diverting eastbound traffic through Lombardy, Ont., and westbound traffic is being diverted through Smiths Falls.