Southampton Town police say Timothy Shaw of Rocky Point was arrested in Speonk on Thursday.
They say he was speeding on Montauk Highway when he struck an embankment and his Subaru Forrester became airborne. The vehicle cleared a four-foot residential fence and struck a utility pole head on before coming to rest in the backyard of a house.
Police said Shaw and the child were not hurt.
Shaw also was charged with endangering the welfare of a child and violating "Leandra's Law" for driving while intoxicated with a child less than 16 years of age.
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