From Washington, D.C. and points East:

Take I-66 W towards Front Royal/Dulles Airport
Take exit 67 towards I-495 N/Dulles Airport/Baltimore
Merge onto VA-267 W (Portions toll)
Take exit 9B onto VA-28 N (Sully Rd) towards Sterling
Turn left onto Waxpool Road
Turn left onto Pipeline Plaza

From Maryland and points North:

Take I-495 Capital Beltway towards Northern Virginia
Take exit 45 onto VA-267 W (Portions toll)
Take exit 9B onto VA-28 N (Sully Rd )towards Sterling
Turn left onto Old Ox Rd/VA-606 W
Turn left onto Waxpool Road
Turn left onto Pipeline Plaza

From Richmond and points South:

Take I-95 N towards Washington, D.C.
Take I-495 Capital Beltway towards Northern Virginia
Take exit 45 onto VA-267 W (Portions toll)
Take exit 9B onto VA-28 N (Sully Rd) towards Sterling
Turn left onto Old Ox Rd/VA-606 W
Turn left onto Waxpool Road
Turn left onto Pipeline Plaza