Usage patterns
〈場所〉に橋を架けるto build a bridge over/at a place
Construction has begun to build a new bridge over this river.
橋が架かるa bridge spans (a river, valley, etc.)
An old bridge spans the valley.
橋を渡るto cross a bridge
I crossed the bridge to the other side.
〈場所〉と〈場所〉を橋でつなぐto connect two places with a bridge
This bridge connects Honshu and Shikoku.
Expressions
危ない橋を渡るtread on thin ice; go out on a limb; walk a tightrope; take risks 石橋を叩いて渡るbeing excessively cautious; knocking on a stone bridge before crossing it
