noun
width (of a road, bridge, etc.)
Technical term used in civil engineering, construction, and official documents for the width of roads, bridges, and similar infrastructure. Not used for general width of objects.
この道路の幅員は12メートルです。
The width of this road is 12 meters.
橋の幅員を拡張する計画がある。
There is a plan to widen the bridge.