The private pilot and A&P mechanic was ferrying an aircraft to his FBO to perform an annual inspection. During final approach to runway 32, a 3,300 x 50 ft, asphalt runway, the pilot said he encountered strong turbulence. The aircraft touched down 200 ft short of the runway, on a paved highway. The aircraft slid onto the runway and made a slow left turn, coming to rest 300 feet left of the runway centerline, with complete landing gear collapse. A post-accident inspection showed evidence that the left tire touched down hard, and the left strut made scrape marks within 5 ft. The aircraft bounced back into the air and at the next touchdown, the left propeller made strike marks. The pilot said he thought the aircraft had hit a low level wind shear on final. He also said he thought the left axle broke off due to fatigue. An FAA airworthiness inspector examined the axle and stated that he discovered no evidence of pre-existing cracks or fatigue.