Interstate 10
Interstate 10 ( I-10 ) is the southernmost transcontinental highway in the Interstate Highway System . I-10 is the fourth-longest Interstate in the United States at 2,460.34 miles (3,959.53 km), following I-90 , I-80 , and I-40 . This freeway is part of the originally planned network that was laid out in 1956, and its last section was completed in 1990.
I-10 stretches from the Pacific Ocean at State Route 1 (SR 1, Pacific Coast Highway) in Santa Monica, California , to I-95 in Jacksonville, Florida . Major cities connected by I-10 include (from west to east) Los Angeles , Phoenix , Tucson , Las Cruces , El Paso , San Antonio , Houston , Baton Rouge , New Orleans , Gulfport , Mobile , Pensacola , Tallahassee , and Jacksonville . Over one-third of its total length is within the state of Texas , where the freeway spans the state at its widest breadth.