Originally Posted by
flugvergnugen
Unfortunately this is not possible from the "southbound" GW Pkwy. You need to continue to the exit to US-50, and keep on that to the 10th St exit. Turn right at Fillmore, and you're in Clarendon.
See, this is why you don't ask a Virginian to give directions from Maryland! (You qualify as an honorary Marylander since you work there,
flugvergnugen.) (fwiw: the "IAD" in my FT Handle reflects the fact that I fly into and out of IAD twice as often as DCA, even though I live much closer to DCA.)