No idea if there are any plans on making Route 7 more bike friendly. I would recommend that if you were going to Target to take S. Dinwiddie St. up to George Mason then it’s only a short hop from George Mason over to the entrance to Target. You could even remain on George Mason passing Rt 7/Leesburg Pike and then make a right at the 2nd traffic light going up a short hill and having a courtyard on your right (that might have bike parking) and a flight of stairs down to the Target.