Historical clue formulations

• Strip down the Interstate — 2026-02-07
• Turnpike feature — 2025-01-11
• Highway divider — 2018-09-28
• Highway divider — 2014-12-22
• Mean alternative — 2011-05-03
• ___ income — 2004-04-08
• Highway divider — 2000-02-29
• Highway feature — 1998-01-10