addr:StreetNameType_type

The element of the complete street name preceding or
following the street name element that indicates the
type of street.
1. A street may have either a pre-type or a post-type,
or neither, but not both. 2. USPS Publication 28
provides the best list of pre-types and post-types, but
it is not exhaustive. 2. USPS Publication 28 provides a
standard list of street type abbreviations, and
recommends their use. The Address Standards Working
Group differs, and recommends storing pre-types and
post -types fully spelled out, exactly as given by the
local naming authority, to avoid confusion. If stored
unabbreviated, directionals can be exported as standard
abbreviations as needed for mailing and other purposes.
3. Pre-types are much less common than post -types in
English. They are typically used for numbered highway
routes and roads. They are much more common in Spanish
and French language street names. 4. Occasionally a
street name may have neither a prefix type or a suffix
type (e.g., "Broadway.") 5. Names like "County Road 28",
where the street type occurs in the middle of the name,
should be treated as a street name with no pre-type or
post -type.