TIGER primary feature names are read from compressed feature-name databases
for each county and Census vintage.
If not already present, compressed addrfeat (address feature) shapefiles are
downloaded from the Census TIGER HTTPS endpoint by default as durable
managed local copies in addr's stow/tiger_feat_names directory. Files from
the former unmanaged TIGER layout are not searched.
When reading into R, the data is filtered to addressable MTFCCs (S1100, S1200, S1400, S1640) that have a name.