 In San Joaquin County, I-580 splits off from I-5 south of Tracy, providing a spur-route connection to the San Francisco Bay Area.From here, I-5 crosses the California Aqueduct for the final time and intersects SR 132, a major route to Modesto and the mountains in the east, as well as the northern end of SR 33.After passing Tracy, I-5 intersects I-205, a connector route to I-580, before intersecting the SR 120 freeway near Manteca.