Massachusetts State Route 9 runs east-west in Norfolk County. It goest through Norfolk County in two parts. The western run goes from near Wellesley to near Newton. While the eastern section runs from near Newton/CHestnut Hill to the Boston City Limits. MA St Rt 9 passes through the following towns in Norfolk County. Wellesley Hills Brookline MA St Rt 9 is not multi-plexed in Norfolk County. MA St Rt 9 intersects the following highways in Norfolk County. Massachusetts State Route 16, at Wellesley Hills.