KanjiJLPT N3
Transit

transit, ford, ferry, cross, import, deliver, diameter, migrate

Mnemonic

A storm rotates 180 degrees and barrels toward the river crossing. You must transit to the other side before it arrives! The wind howls as you sprint across the bridge, barely making it as the storm slams into the shore behind you.
Additional thoughts
Visualize a weather radar showing the storm spinning in degrees on a compass, while you dash across a bridge over raging water. The urgency of transit is driven by the rotating storm.
Quick recall
A storm spins 180 degrees, forcing you to transit the bridge before it hits.

Details

The keyword for 渡 is transit. This kanji conveys the idea of crossing over or passing from one side to another, whether it be crossing a river, a bridge, or even traveling across the sea. It extends to the broader sense of handing something over or transferring it from one person to another. The character captures both physical movement across a space and the metaphorical passing along of objects, information, or responsibilities.
On'yomi
Kun'yomi
わた.る、-わた.る、わた.す