| Interstate 10 In California |
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Interstate 10 , the major east-west Interstate Highway in the Southern United States , runs east from Santa Monica, California , on the Pacific Ocean , through Los Angeles and San Bernardino to the border with Arizona . In the Los Angeles area, it is known as the Santa Monica Freeway and San Bernardino Freeway , linked by a short Concurrency on Interstate 5 (the Golden State Freeway ). A short piece of the San Bernardino Freeway west of I-5 is part of the legislative definition of Route 10, but does not carry Interstate 10 - thus it is an unsigned State Route 10. This section of freeway, once a short '''Interstate 110''' until 1968, is signed for I-10 eastbound and for U.S. Route 101 (its terminus, at the Santa Ana Freeway ) westbound. MAJOR CITIES Bolded cities are officially-designated Control Cities for signs. ROUTE DESCRIPTION State Route 10 The legislative definition of Route 10 includes a spur from Interstate 5 (the Golden State Freeway ) west to U.S. Route 101 (the Santa Ana Freeway ) near downtown Los Angeles. This section of roadway, the westernmost part of the San Bernardino Freeway , was part of the original San Benardino Freeway, carrying U.S. Route 60 , U.S. Route 70 and U.S. Route 99 long before the Golden State Freeway opened. It was added to the Interstate Highway System by 1958 as Interstate 110, but in 1968 it was removed from the system, becoming part of the definition of Route 10. This road is signed only for the roads it feeds into - US 101 north westbound and I-10 east eastbound. It has no Interchange s except its ends. The Exit Number s for I-10 follow the signed route of I-10 along I-5, but one exit on SR 10 - the eastbound for State Street and Soto Street before it merges into I-10 eastbound - is numbered (as exit 19). Cal-NExUS Interchange Exit Numbering HISTORY What is now Interstate 10 east of Los Angeles was generally part of the to Heber ; see U.S. Route 99 and State Route 86 for details. A 1931 extension took it south to Calexico on present State Route 111 .) California Highways: Chronology of California Highways 1915-1932 The route from Indio via Mecca to the Arizona state line near Blythe was defined in 1919 as Pre-1964 Legislative Route 64 . (Later extensions took LR 64 west along present State Route 74 ; a 1931 cutoff bypassed Mecca to the north.) LR 26 was extended west from San Bernardino to Los Angeles in 1931, running along an alignment south of the existing US 66/US 99. Neither of these was a signed route until ca. 1932, when U.S. Route 60 was extended west from Arizona to Los Angeles, running along LR 64 to Indio, LR 26 (with US 99) to Beaumont , Pre-1964 Legislative Route 19 to Pomona , and LR 26 to Los Angeles. (The original alignment of LR 26 ran roughly where State Route 60 now is west of Pomona, but an alignment close to present I-10 opened ca. 1934. U.S. Highways: East-West Routes 1933 Rand McNally Los Angeles and vicinity map Thus, in 1931, what is now I-10 east of Los Angeles had been defined as LR 26 from Los Angeles to Indio and LR 64 from Indio to Arizona. It was signed as US 99 from San Bernardino to Indio, and US 60 came along ca. 1932 from Los Angeles to Pomona and from Beaumont to Arizona. between Pomona and Los Angeles. Old alignments and names include Valley Boulevard , Ramona Boulevard and Garvey Avenue . The route east from Los Angeles was added to the Interstate Highway System on August 7 , 1947 . It was assigned the I-10 number on August 14 , 1957 , and the short piece west of I-5 was approved as I-110 on November 10 , 1958 . By then, most if not all of the San Bernardino Freeway had been completed, and I-10 was signed along the existing Freeway along with US 70, US 99, and part of US 60. Those three routes were all removed in the 1964 Renumbering , leaving only I-10. The part west of downtown Los Angeles was . EXIT LIST State Route 10 REFERENCES |
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