Related Clues:

• City rtes.
• Many are named for trees: Abbr.
• They may get flooded: abbr.
• Elm and Oak, briefly
• City grid: Abbr.
• Hagiology subj.
• Urban roads: Abbr.
• Parts of rtes.
• NYC's 34th and 42nd
• 10th, 20th and 30th in NYC
• Parade route sections: abbr.
• Most letters, in DC
• LA and MI
• Rd. intersections
• Blvd. cousins