Freight still crosses the Livingston Avenue Bridge in the middle of the night, and if you are out plowing you hear every car of it, because everything else has gone muffled. Snow removal north of downtown — through Watervliet, Green Island and the streets that run down toward the water — is night work by its nature: driveways opened, walks cleared, salt spread before the melt-and-refreeze cycle takes hold. River air keeps the snow damp, and damp snow packs into the sort of ice a shovel has to argue with. So it comes off early, while it is still willing to move. Morning arrives to a driveway that looks like the storm skipped the address entirely.