APM: 21 Location: Santa Ana Fwy and San Diego Fwy, Irvine Just after the I-405 split we’re 1.5 miles from SR 133. APM: 21 Location: Santa Ana Fwy and San Diego Fwy, Irvine Reassurance shield after the I-405 split. APM: 22 Location: Santa Ana Fwy and Alton Pkwy, Irvine 1.25 miles to SR 133. APM: 22 Location: Santa Ana … Continue reading Interstate 5, I-405 to SR 133