Mileage: 2,460.34. It stretches from the Pacific Ocean in Santa Monica, California to Jacksonville, Florida, crossing also Arizona, New Mexico, Texas, Louisiana, Mississippi, and Alabama. It is the southernmost coast-to-coast interstate highway in the United States. Major cities served include Los Angeles, California; Phoenix, Arizona; El Paso, Texas; San Antonio, Texas; Houston, Texas; New Orleans, Louisiana; and Jacksonville, Florida. This route is known as the Christopher Columbus Transcontinental Highway.
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