Answer: roadbeds

AnswerCrossword Clue
ROADBEDSTrack foundations
ROADBEDSStreet surfaces
ROADBEDSHighway foundations.
ROADBEDSUnderpinnings for ties.
ROADBEDSSupports for ties and rails.
ROADBEDSUnpaved surfaces
ROADBEDSTrain track supporters
roadbedsThe material laid down to form a road
roadbedsROADBED, the foundation for a railroad track
roadbedsThe part of a road on which vehicles travel
roadbedsThe foundation structure on which railroad tracks are laid