Buses will replace trains between Port Washington and Great Neck over the weekend of June 20-21 during the demolition of the 115-year-old Colonial Road Bridge in Great Neck. Service on the branch will be reduced from half hourly to hourly in both directions. Many Port Washington Branch trains will operate on alternate tracks and platforms, so customer should also pay close attention to platform signage when departing. For more information, go to www.mta.info/lirr.