The American Association of State Highway and Transportation Officials (better
known by the acronym AASHTO) has approved a national corridor plan for a U.S.
Bicycle Route System (USBRS).

The Chairman of the AASHTO Bike Route committee is ABC's (and ADOT's) Richard
Moeur. http://cms.transportation.org/?siteid=68&pageid=2809

My thanks to Richard for many years of effort to push this through. If you want
to thank him personally, email him at rmoeur@...

According to the maps, Arizona has 3 corridors, B-80, B-90 and B-79, roughly
following I-40, I-10 and I-17 respectively. Maps of the routes and other links
at http://www.bikingbis.com/blog/_archives/2008/10/29/3952638.html

FAQ at http://www.adventurecycling.org/routes/nbrn/usbrsFAQ.cfm

Hat tip: Adventure Cycling Bike Bits. Subscribe at
http://www.adventurecycling.org/bikebits/subscribe.cfm

tla