81 is probably wide enough
78 with neverending construction I do take with a 102. But is dangerous even with a car. I'd ban 102's and doubles there if it was up to me. Until one day all lanes are wide enough and smooth and linnes properly painted with room on the shoulder for a 102 and a foot or two extra.
Probably wouldn't happen in our lifetime.
Between Lehigh County and Hamburg, I'd ban them. Screw the trucking companies and screw the shippers and recievers.. They don't care how many people get killed. I don't care if they go broke.