I have gone to the outer banks & Virginia beach from Pittsburgh pulling a 40' 5er several times. I take I-79 south to Morgantown WV & then I-68 across to Hancock & Rt 522 south to Winchester. By pass around Winchester to I-66 east to Rt 17 south & by pass around Warrenton on rt 17 into Fredericksburg & I-95 south to I-295 by pass around Richmond to I-64 east.
Most all of Rt522 is 4 land divided highway and no towns to go thru, other than 2 lane for 2 or 3 miles thru Berkeley springs & that is 3 or 4 stop lights. Same with Rt 17, 4 lane divided highway. Worst part of the trip is I-95 from Fredericksburg south to the I-295 by pass at Richmond if the traffic on I-95 is heavy...