Washington Outer Beltway
A 1964 plan proposed by a consultant for Prince William County showed a freeway passing by Quantico , Manassas , Leesburg , Poolesville , upper Montgomery County , Fort Meade , southeastern Prince George's County , and La Plata . 
<triplet> Prince William County <subj> Manassas <obj> shares border with <triplet> Manassas <subj> Prince William County <obj> shares border with <triplet> Poolesville <subj> Montgomery County <obj> located in the administrative territorial entity <triplet> Montgomery County <subj> Poolesville <obj> contains administrative territorial entity <subj> Prince George's County <obj> shares border with <triplet> Prince George's County <subj> Montgomery County <obj> shares border with