I forgot to provide the links to the essays and pictures of Phase I published sense construction began:

Introduction
DCMP 2009 04 18
DCMP 2009 08 02
DCMP 2010 01 02
DCMP 2010 05 07
DCMP 2010 06 23
DCMP 2010 10 23
DCMP 2011 01 15
DCMP 2011 05 07
DCMP 2011 07 27
DCMP 2011 10 15
DCMP 2012 04 15
DCMP Airport Station Rendering that DCA writer referred to.
DCMP 2012 06 23
DCMP 2012 09 08
DCMP 2012 11 17
VDoT Aerial Photos
VDoT Aerial Photos 10-16-2012
DCMP 2013 02 10
DCMP 2013 04 07
DCMP 2013 06 22 Post that should be of most interest here as it has before pictures the alignment on the airport property.
DCMP 2013 09 15

When construction begins on Phase II next year, you can expect to see essays and pictures of the activities at the airport.

John in the sand box of Maryland's eastern shore.