I would take 58 east to Barstow, then I-40 all the way to AZ and take AZ95 south by Lake Havasu and Parker to Quartzsite. We just made that trip earlier this year and it worked out great for us. Nice scenery along the river, too.
Curly
2019 Chev. Double cab 2500HD, 6.0, 4:10 diffs, six speed auto
2013 Heartland Sundance XLT 265RK
Dang dedmiston! I was in Santa Clarita and San Fernando Valley just last month. I probably drove right past the Beale's Cut and didn't even know it! Thanks for the *obscure* info
2002 Itasca Suncruiser 32V
2012 Suzuki Grand Vitara