noun
bridge-opening ceremony; first crossing of a bridge
A ceremony held when a new bridge is completed, often involving a formal first crossing by officials or local residents.
新しい橋の渡り初めが明日行われます。
The bridge-opening ceremony for the new bridge will be held tomorrow.
渡り初めでは、地元の子どもたちが最初に橋を渡った。
At the first crossing ceremony, local children were the first to cross the bridge.