"Do they still have some sections that are 3 lanes (instead of 4)? That's what it was like years ago when we drove it one time thru WV. The canyons were so narrow they couldn't fit 4 lanes across in them."
They eliminated the three lane sections back in the early 80's. Those sections got more people killed than you could ever imagine. The idea was one lane north, one lane south and a shared passing lane. It was not a slow traffic lane added. They used federal money to upgrade the entire road and eliminate the old two lane tunnel completely.
I used to live across the river from the turnpike near Charleston, and one Sunday evening my neighbor and I counted only the semi trucks (paying $18 a pop) going by for an hour. During that hour they netted over $20,000. When the road was originally built the toll was to be charged only until the debt was paid. Politics at its finest.