flyover

noun4

1. •
   (US) A low-level flight, especially of military aircraft, of a ceremonial nature; a flypast (British).
2. •
   (UK, Commonwealth) A road or railway that passes over another, allowing routes to cross without interruption.

   • As our train to Paris dashed through the labyrynthine flyovers at Porchefontaine, barely a mile from Versailles, the 75 m.p.h. limit was already almost attained. — 1961
3. •
   (US) A high-level overpass built above main overpass lanes.
4. •
   [before a noun] (US, informal) Middle America, noncoastal America.

   • If Democrats end up flipping state houses in places Trump won in 2016, they will have proved themselves capable of winning in the places coastal elites derisively refer to as “flyover America.” — 2018