temporary (suspension) bridge; makeshift bridge
bridge (between cultures, generations, etc.); link; go-between; intermediary
walkway (constructed on a cliff face); plank path
「桟」 has other readings with different meanings.
彼は日米の架け橋となった。
He became a bridge between Japan and the US.
外交官は両国間の架け橋を築いた。
The diplomat built a bridge between the two countries.
音楽は異なる文化をつなぐ架け橋の役割を果たす。
Music plays the role of a bridge connecting different cultures.