I am patently furious at Garmin, having taken the time last month to advise them of the below via voice which is just a 'bit' important but as of this writing after a Map update no changes have been made.
These highways include though not limited to:
Route 90 (the Mass Turnpike, running East and West from Boston to NY State)
Route 3 (To / From Boston, the Cape)
Route 93 (To / From Boston)
Route 95 (To / From Boston, Rockport, Gloucester)
Route 128 (To / From Boston, Rockport, Gloucester)
Route 495 (Connects to Route 93, Route 495)
Route 2 (To / From Boston)
These are major arteries within the State of Massachusetts. Your software may say "Take Exit 36" which is perhaps now Exit 104. Anyone travelling from out of State is screwed trying to navigate their way around.