Related Clues:

• 'Hi, Hadrian!'
• Way to go, briefly
• Rd. map line, perhaps
• Certain numbered hwy.
• Greeting of yore
• N.Y.C.'s Fifth, e.g.
• Mad. or Lex.
• Short map line?
• One of 17 on a Monopoly board: abbr.
• Wee way
• No. on a map
• Rd
• I-80, for one
• Highlighted line on a map: Abbr.
• Many a state name, in D.C.