I am posting this in hopes that it will help someone spend less time in a day finding the latest RUS standards for design!
RUS Electirc Bulletins page:
http://www.rurdev.usda.gov/RDU_Bulletins_Electric.html
A few of the documents I use on a regular basis:
Specifications and Drawings for 24.9/14.4 kV Line Construction (12/15/98):
http://www.rurdev.usda.gov/SupportDocuments/UEP_Bulletin_1728F-803.pdf
Specifications and Drawings for 12.5/7.2 kV Line Construction (4/21/05):
http://www.rurdev.usda.gov/SupportDocuments/UEP_Bulletin_1728F-804.pdf
Specifications and Drawings for Underground Electric Distribution (6/2/00):
http://www.rurdev.usda.gov/SupportDocuments/1728f-806.pdf
To my knowledge the Bulletins page contains the most current documents, so watch for updates!
Jeremiah