APM: 25 Location: SR 73 and Irvine Ave, Costa Mesa Reassurance shield after the SR 55 interchange. APM: 24 Location: SR 73 and Jamboree Rd, Costa Mesa SR 73 becomes the San Joaquin Hills Toll Road. APM: 24 Location: SR 73 and Jamboree Rd, Newport Beach Welcome to Newport Beach! APM: 24 Location: SR 73 and Jamboree Rd, Newport … Continue reading California State Route 73, SR 55 to SR 133