APM: N/A Location: Main St and Mountain View St, Barstow After I-15, State Route 40 Spur ends and I-15 Business becomes a locally-maintained highway. It is well signed as Route 66. Location: Main St and Yucca Ave, Barstow Reassurance shield a couple blocks later. Location: Main St and Yucca Ave, Barstow Route 66 reassurance shield … Continue reading Interstate 15 Business, I-15 to I-15