pivot bridge

A form of drawbridge in which one span, called the pivot span, turns about a central vertical axis.

Japanese Meaning

中央の垂直軸を中心に、一枚の橋桁（ピボットスパン）が回転することで開閉できる可動橋の一種

The old pivot bridge over the river still rotates to let tall ships pass.

川にかかるその古い旋回橋は、背の高い船を通すために今でも中央の垂直軸を中心に回転します。

Sense（1）

A form of drawbridge in which one span, called the pivot span, turns about a central vertical axis.

pivot bridges

（ plural ）