I'll walk my bike while winter commuting at one particular intersection. Partly because its a T-intersection and drivers don't have any reason to expect traffic coming straight through from my side while they are turning left. Also the road is narrow and I have to come to a near stop on the other side to make a 90 degree turn to get on the MUP. During the summer I don't need to do that, but the alternate routes are undesirable in the winter as they don't get plowed.

Typically I ride through intersections like a car, using left turn lanes etc.