Interstate 10 is one of the most important east-west freeways in the country. Starting in
Santa Monica, it stretches all the way east to {fl:jacksonv].
Within Arizona, Interstate 10 enters from California at Ehrenberg and continues east to Phoenix. From Phoenix, it continues southeast to join Interstate 8 near Casa Grande and on to Tucson. East of Tucson, the freeway continues through Benson and Willcox and eventually into New Mexico.
