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U.s. Highway 80US 80 is an east-west United States highway. As the "0" in the route number indicates, it was originally a cross-country route, from the Atlantic to the Pacific. However, the entire segment west of Dallas, Texas has been decommissioned in favor of various Interstate highways and state highways. Termini As of 2004, the highway's eastern terminus is in Tybee Island, Georgia at the Atlantic Ocean. Its western terminus is at the border of Dallas and Mesquite, Texas at an intersection with Interstate 30. Original route It originally had its western terminus in San Diego, California. The original route is now roughly the alignment of Interstate 8 through San Diego and Imperial Counties. The original alignment splits off in western El Cajon to become El Cajon Boulevard and Main St. Old Highway 80 then continues roughly parallel to Interstate 8 through Alpine. It picks up again at Japatul Rd. and goes through Descanso Junction and Guatay and crosses Interstate 8 east of Pine Valley. It continues on the south side of the freeway to near the Imperial County line through Boulder Oaks, Live Oak Springs, Boulevard and Jacumba. Most of old Highway 80 east of El Cajon to Imperial County still consists of the original pavement in excellent condition. East of Yuma the old route splits off to the north to the Phoenix area. States traversed The highway passes through the following states: Originally it also passed through New Mexico, Arizona, and California. Related U.S. routes Sources 080
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