The row was planted to be read as one thing
Belle Meade Boulevard's tree lines weren't planted the way a typical yard tree gets planted - as its own decision, in its own moment. They went in as a set, spaced and aligned so that a driver or a walker takes in the whole row as a single visual gesture rather than counting individual trees. That's the entire point of an allee, and it's also exactly what makes losing one tree from it a different kind of problem than losing an ordinary yard tree. The gap doesn't read as "one tree gone." It reads as a break in a pattern that everyone driving past can register instantly, even if they couldn't have named the species a moment before.
The stump has to disappear completely, not just get shorter
Once a tree in a matched row comes down, the stump left behind sits in exactly the spot where symmetry is being judged hardest. A stump ground flush but left as a slightly raised or discolored patch of ground will draw the eye every time someone's gaze runs down that row, even after grass grows back over it. We grind these several inches below the surrounding grade rather than to grade exactly, anticipating some settling, and backfill with soil matched as closely as possible to what's already there so the patch doesn't stand out as a different color of dirt under thin new grass.
What a replacement tree needs from the stump work
Most homeowners dealing with a gap in a matched row want to replant in roughly the same spot, and that decision changes how we grind. Rather than leaving a wide crater of ground-up wood and dirt, we keep the disturbed area tighter and more centered on the old root flare, since a young replacement tree needs solid, undisturbed soil close by rather than a wide zone of loosened fill that won't support a root ball evenly for a year or two. We'll also flag if the old stump showed signs of a soil-borne issue - certain root rots can affect a same-species replacement planted too soon in the same hole.
Patience matters more here than speed
A matched row is a long-term asset, planted with the expectation that it would still be there in another hundred years, and a rushed stump job that damages a neighboring tree's roots to save twenty minutes undermines exactly the thing the row was built for. We'd rather take an extra hour confirming where a neighboring tree's roots run before grinding than shave that hour off and risk the tree standing three feet away.
The short version
Losing one tree from a matched row is a symmetry problem as much as a tree problem - the stump needs to disappear completely, and the ground needs to be ready for whatever replaces it, without disturbing the trees still holding the line together.