Interstate 605

Interstate 605

Interstate 605 is the San Gabriel River Freeway, following the San Gabriel River between Interstate 405 and California 22 in Seal Beach and Interstate 210 and Historic U.S. 66 (Huntington Drive) in Duarte. These endpoint cities are not featured on the overhead signs as control or destination cities; instead, the pull-through signs point simply display "Thru Traffic."

Interstate 605 California Guides

The short section of Interstate 605 between California 22 and I-405 was designated as California 240 from 1963 until 1968, when the route description was changed to incorporate all of California 240 as part of I-605. Interstate 605 was also extended from I-10 north to I-210 at the same time in 1968.

Key Opening Dates of Interstate 605:

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Page Updated Thursday September 23, 2010.