After the railway operation was ended, the company changed its name into Kaya Kosan Co., Ltd. and did business such as managing 'Kaya Steam Locomotive Square,' which are facilities for preserving and exhibiting cars of the train.
廃止後にはカヤ興産株式会社と社名を変更し、鉄道保存展示施設「加悦SL広場」の運営なども行っていた。