The road is obsolete. I don’t know how it qualifies as an Interstate. If you want to be the one car sandwiched in between a hundred trucks and ruin your suspension go at it. I will take I-70 or I-80 or even Route 30 over that toll road. It’s a dying road in a dying state. “You Have A Freind In Pennsylvania” ............... “Can I Get A Receipt?”
When the original section from Carlisle to Butler was built in the 30’s it was quite an engineering achievement at the time. And it was actually completed ahead of schedule and under budget, a RARE occurrence for a gov’t project.
Pa. Turnpike is working on making the whole thing 3 lanes each way.