Greenwood Avenue in Bethel is closed between Library Place and Blackman Avenue while Metro North makes repairs to the railroad crossing.  Drivers should use South Street as a detour.  First Selectman Matt Knickerbocker says this will be an extended closure, likely through the weekend. Substitute bus service will be provided between Danbury and Redding due to the track condition requiring attention.  Metro North says train service between Redding and South Norwalk is operating.