A manual for writers of research papers, theses, and dissertations, 7th edition - Kate L. Turabian 2007

Addresses
Abbreviations
Part III. Style 20 spelling

In text, spell out and capitalize terms that are part of addresses, including those listed below and similar ones (other synonyms for street, for example). In tables, figures, citations, and mailing addresses, use the abbreviations. Note that all the abbreviations use periods except for the acronyms (Northeast and such). See 23.1.7 for an example of an address in text.

Ave. - Avenue

Blvd. - Boulevard

Ct. - Court

Dr. - Drive

Expy. - Expressway

Pkwy. Parkway

Rd. - Road

Sq. - Square

St. - Street

N. - North

S. - South

E. - East

W. - West

NE - Northeast

NW - Northwest

SE - Southeast

SW - Southwest

If you use one of these terms alone, it becomes a generic term and should be lowercased and spelled out.

He drove down the street.

The storm came in from the west.