Solution: RC1018 Infrastructure Deconstruction

Answer: HIT THE ROAD JACK

This puzzle presents two columns of crossword-style clues, one labelled "Rubble" and one labelled "Streets". As hinted by the flavor text, the answers to each Rubble clue do indeed contain something extra—each contains all the letters in the corresponding Street clue, plus one extra letter. Taking these extra letters in order spells out the answer HIT THE ROAD JACK.

Rubble Answer Streets Answer
"___ One Bites the Dust" ANOTHER Elaborate; highly decorated ORNATE
The H in HDB HOUSING Japanese warlord SHOGUN
Very, very old ANCIENT Dog-like CANINE
Weather profile of an area CLIMATE Spite; desire to harm MALICE
Language this puzzle is written in ENGLISH Not attached SINGLE
Exterior OUTSIDE Room where an artist or photographer might work STUDIO
To take a piece, in chess CAPTURE Where a storm might take place, idiomatically TEACUP
Areas; countries REGIONS Vocalist SINGER
Larger or more important GREATER Remorse REGRET
Oklahoma City NBA team THUNDER Watch with hinged cover HUNTER
Way to address a queen: "Your ___" MAJESTY Humid, like a sauna STEAMY
Celebratory gatherings PARTIES 7 Up competitor SPRITE
App billed as a "Free Voice and Text Chat for Gamers" DISCORD "These aren't the ___ you're looking for" DROIDS
Protein that's the main component in hair KERATIN Light-sensitive layer in the eye RETINA