deterioration; becoming decrepit; becoming worn out
老朽化で橋が閉鎖された。
The bridge was closed due to deterioration.
市は老朽化したインフラを改修する。
The city will repair its aging infrastructure.
工場の生産ラインは老朽化が進み、更新が必要だ。
The factory's production line is deteriorating, requiring an upgrade.