Why a Bridge Called for Silence
In this folk belief, crossing a bridge over rushing water was a moment when good fortune could be lost. Keeping quiet was a small act of protection: words were treated as something that might expose or release luck, while the current offered a vivid image of it being carried away.
A Crossing as a Vulnerable Moment
A bridge takes a traveler from one bank to another, making an ordinary journey feel like a passage between states. The rule turned that passage into a brief ritual: concentrate on getting across, and do not risk disturbing your good fortune with speech. Its logic belongs to symbolic belief, not to a demonstrated effect of talking near a river.
The image is what makes the custom memorable: for the length of the crossing, silence kept luck from following the water downstream.
