also: しゅうきょう
noun
pontoon bridge; floating bridge
A temporary bridge supported by boats or pontoons. Used in military, historical, or engineering contexts.
古代の軍隊は舟橋を架けて川を渡った。
Ancient armies crossed rivers by building pontoon bridges.
この地域では、洪水の後に舟橋が設置されることがある。
In this area, a pontoon bridge is sometimes set up after a flood.
Also means 'floating bridge', but 浮橋 can refer to any bridge that floats, not necessarily using boats. 舟橋 specifically implies a bridge made of boats.
Compound of 舟 (fune, 'boat') and 橋 (hashi, 'bridge'). The reading ふなばし is a kun'yomi compound; しゅうきょう is the on'yomi reading, less common.