Numerous Interstates and California State Routes provide access to Chula Vista. To the south of the city, Interstate 5 starts, and it passes through the western part of the city. Chula Vista and North County are connected by Interstate 5, which also leads to Greater Los Angeles and Northern California. The Sorrento Valley section of Interstate 805 connects to Interstate 5 as a bypass. One of three auxiliary three-digit Interstates that cross an international boundary is Interstate 905, which originates at the Otay Mesa Port of Entry. Highways State Routes 54 and 125 connect to East County cities via northern and northeastern axes.