I avoid I95 in Wash DC area like the plague.
I would rather take a longer route to I81 to Harrisburg, then 22 to Rt 15.
You can take 15 N to Williamsport but I prefer Rt 11 short ways to 147 to I180 to Williamsport. A short section of 2 lane then interstate to Wport. A little more miles but most better roads.
15 /I99 to I86 to 53 to Pburg
Don & Marge
'13 Newmar Ventana 3433 - '14 CR-V TOAD
'03 Winnebago Adventurer 31Y - SOLD