For a document I'm preparing that includes photos, each photo caption includes the approximate street intersection from which the photo was taken, e.g.:
...., Market St & Grant Ave looking east.
In cases where both streets are of the same "type" (both "St" or "Ave"), I omit the first and pluralize the second, e.g.:
...., Market & Kearny Sts looking west.
Is that an OK thing to do? (I couldn't find this addressed in The Chicago Manual of Style. If it's in there, please give the citation.)
One thing I did find in the CMOS is that I should put the period after the abbreviations, e.g.:
...., Market St. & Grant Ave. looking east.
If I do that, what is the proper plural? Still just the period after the abbreviation and no other punctuation?
...., Market & Kearny Sts. looking west.
Do the same rules apply for intersection abbreviations in the main body text? Thanks.