Highway 99 is the main route between the valley's major cities and towns. Interstate 5 runs roughly parallel to it to the west but misses the major population centers; its main use is for quick access to San Francisco or Los Angeles. Major roads that connect the interstate with Highway 99 are highways 58 (to Bakersfield), 198 (to Visalia), 140 (to Merced), 132 (to Modesto), and 120 (to Manteca).
Caltrans. 800/427–7623; www.dot.ca.gov.