Un début de réponse pour le chiffre :
Extrait d'un carnet de route
www.internenettes.fr/decouv/66.html
" Le lendemain, avant de quitter
Kingman, nous visitons le musée de la
Route 66. Il est très différent de celui de
Clinton. Il est essentiellement axé sur l'histoire de la
route 66. Nous apprenons pourquoi elle s'appelle la « 66 ». Il s'agit d'une grille qui sert à numéroter les routes. Cette route, qui suit le 35e parallèle, correspond aux numéros 62, 64, 66. C'est le 66 qui a été retenu. "
Sur Wikipedia :
Championed by
Tulsa, Oklahoma businessman
Cyrus Avery when the first talks about a national highway system began, US 66 was first signed in 1927 as one of the original
U.S. Highways, although it was not completely paved until 1938. Avery was adamant that the highway have a round number and had proposed number 60 to identify it. A controversy erupted over the number 60, largely from delegates from
Kentucky which wanted a
Virginia Beach–
Los Angeles highway to be
US 60 and
US 62 between
Chicago and
Springfield, Missouri. Arguments and counter-arguments continued and the final conclusion was to have US 60 run between
Virginia Beach,
Virginia, and
Springfield,
Missouri, and the
Chicago–
L.A. route be US 62.
Avery settled on "66" (which was unassigned) because he thought the double-digit number would be easy to remember as well as pleasant to say and hear.
Pour Route, c'est aussi un mot anglais qui sous entend une notion de voyage, de périple, peut-être est ce la raison ?
A voir l'article de Géo :
www.route66trip.com/...ute66-No228-1998.pdf
Patrick
