▁to ▁the ▁la kes h ore ▁the ▁rest ▁of ▁the ▁way ▁to ▁Char le vo ix . ▁M - 6 6 ▁ends ▁at ▁an ▁intersection ▁with ▁US   3 1 ▁south ▁of ▁dow nt own ▁next ▁to ▁Lake ▁Michigan . ▁ ▁Services ▁MD OT ▁provides ▁a ▁number ▁of ▁different ▁services ▁to ▁motor ists ▁travel ing ▁along ▁the ▁state ▁tr unk line ▁highway ▁system . ▁Al ong ▁M - 6 6 , ▁there ▁are ▁six ▁different ▁car pool ▁lots ▁located ▁near ▁Nash ville , ▁Wood land , ▁B eld ing , ▁Sher idan , ▁S ears ▁and ▁Mar ion . ▁There ▁are ▁additional ▁services ▁provided ▁to ▁travel ers ▁in ▁the ▁form ▁of ▁road side ▁par ks ▁and ▁rest ▁areas . ▁There ▁are ▁two ▁road side ▁par ks ▁along ▁the ▁highway , ▁one ▁is ▁between ▁Wood land ▁and ▁Wood bury , ▁and ▁the ▁second ▁is ▁in ▁Sher idan . ▁The ▁road way ▁also ▁provides ▁access ▁to ▁the ▁I onia ▁State ▁Rec re ation ▁Area ▁and ▁a ▁state ▁har bor ▁on ▁Lake ▁Char le vo ix . ▁ ▁History ▁ ▁M - 6 6 ▁was ▁first ▁signed ▁along ▁a ▁road way ▁by ▁July ▁ 1 , ▁ 1 9 1 9 ▁between ▁M - 1 6 ▁( now ▁M - 2 1 ) ▁at ▁Low ell ▁and ▁M - 4 6 ▁near ▁Lake view . ▁The ▁design ation ▁was ▁extended ▁in ▁ 1 9 2 5 ▁along ▁M - 4 6 ▁to ▁Six ▁L akes ▁and ▁then ▁north ▁to ▁M - 1 3 ▁( now ▁US