hi brad ...

the standard methods that you have been using, to give
"a sense of place" in your downtown / street photography
can be used here as well. once the trees are vanished,
it will be hard to remember what the intersection looked like
when they were there.

try to think about seeing the trees from a distance, from across/down the street,
maybe from a nearby building or looking up
... and in different conditions ( rain, dusk, dawn, nighttime, lots of cars, no cars ) ...

it is sad when trees like those are cut down ... it sounds like a great series
and service you are doing!

good luck

john