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In ArizonaArizona was the 48th state admitted to the United States and is part of the Southwest United States. It is one of the Four Corners states, south and east of the Colorado River, bordering New Mexico, Utah, Nevada, California and Mexico. Its major cities ar, as well as Jacksonville, the highway is known as the " Pearl HarborPearl Harbor is a complex embayment on the island of O'ahu, Hawai'i, west of Honolulu. Much of the harbor and surrounding lands is a US Navy deep water naval base: headquarters of the US Pacific Fleet. The attack on Pearl Harbor by Japan on 7 December 194 Memorial Highway", except for the portion through downtown PhoenixThis article is about the Arizonan city. For the mythical creature see Phoenix, and for other uses see Phoenix (disambiguation). Phoenix is the capital, largest city, and largest metropolitan area of the state of Arizona, United States. As of the 2000 cen, where it is known as the "Papago Freeway". The interstate's route through Phoenix was hotly contested in the 1960sCenturies: 19th century 20th century 21st century Decades: 1900s 1910s 1920s 1930s 1940s 1950s 1960s 1970s 1980s 1990s 2000s 2010s Years: 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 Events and trends The 1960s was a turbulent decade of change around and 1970sMillennia: 1st millennium 2nd millennium 3rd millennium Centuries: 19th century 20th century 21st century Decades: 1920s 1930s 1940s 1950s 1960s 1970s 1980s 1990s 2000s 2010s 2020s Years: 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 Events and trends. A plan proposed by the Arizona Department of Transportation involved city block-sized 270-degree "helicoils" that would connect motorists to freeway lanes 100 feet in the air, but voters killed it in 1973 as a result of opposition from the Arizona Republic and a growing nationwide anti-freeway sentiment. Ten years later, ADOT unveiled the current below grade plans. Despite local opposition, Interstate 10 was finally completed on August 10, 1990.
I-310 and I-510 are parts of what was slated to be I-410 and act as a southern bypass of New Orleans, Louisiana. I-610 is a shortcut from the eastern to western portion of New Orleans avoiding the I-10's detour into New Orleans' central business district.
I-12 between Baton Rouge and I-59 near the Louisiana/Mississippi state line is actually a shorter route than I-10 between those same points, since I-10 dips to the south to go through New Orleans. Those traveling to or from Baton Rouge who do not wish to detour into New Orleans should leave I-10 and take I-12 for its entire route until it again meets with I-10.