Port Authority Bus Terminal Gate Map - Second Floor
Gates 1-56 and 60-85 are two floors down. Gates 200-234 are accessible from this floor. Gates 300-326 and 400-425 are one floor up.

More from dougandadrienne.info
   NJ Transit schedules
   Port Authority Bus Terminal Gates
   Port Authority Bus Terminal Map - Second floor
      (Gates 200-234, to Gates 300-326, to Gates 400-425)
   Northern NJ bus map
   Central NJ bus map
   Southern NJ bus map
Around the area
   NYC subway map
   Long Island transit map
Source: NJ Transit data & schedules. Gate info current as of September 2013.