mixing bowl
An interchange involving several different highways, where cars have to cross diagonally across several lanes to get to the route they need. Everyone is trying to merge/cross simultaneously, resulting in a sort of braided motion just short of (and sometimes achieving) complete chaos.
Example:
"I wouldn't mind driving to E-town except for that goddamn mixing bowl where 30 crosses 283."
"I wouldn't mind driving to E-town except for that goddamn mixing bowl where 30 crosses 283."