開通: opening (of a new road, railway, etc.)

開通かいつう kaitsuu

opening (of a new road, railway, etc.); going into operation (e.g. telephone communication); reopening (e.g. a road to traffic)

JLPT N2Town & travel

新あたらしい高速道路こうそくどうろが来月らいげつついに開通かいつうする。

The new expressway finally opens next month.