I'm still not seeing it. Never seen an intersection on highway.
There's even a railroad crossing on it.
Right now, most of the highway are 4 lanes, meaning two lanes per way. Toward Welland, it changes into two way freeway, but it's still the highway.
from: 43.178018,-79.28833 to: Hwy-406 & E Main St, Welland, ON - Google Maps