I was at the nest today at noon for about 20 minutes. The eaglet was just standing in the nest. She wasn't flapping her wings while I was there, she was just standing and looking around. One of the adults was in the tree to the right of the eaglet, just above it, perched on a branch - the adult didn't move at all the entire time I was there. It's hard to see the adult because he/she is behind the branch - just look closely! (I took many photos, but they all look exactly like this one because the eaglet didn't move much.)
As for the person who reported that they were marking the sidewalk for construction; there definitely wasn't anything being done today, and the sidewalks looked intact. I looked up the sidewalk all the way from 208th to 209th on the side the nest is on [south side of the street], and there was no disturbance at all. Also, I looked on the north side of the street, and, didn't see anything there either. I hope if they are doing something, they just wait a couple weeks till this baby girl flies!