Based on my 40000 mi of bike touring I want to share the 2 most dangerous roads I have ridden on:
1 Sierra Cascades: East of McCloud on HWY 89. This road is marked in the map description as truly dangerous. I can attest this stretch is extremely dangerous due to logging traffic and no shoulder. I cannot remember if I rode the stretch on a weekday or during the weekend. There is a small detour S of HWY 89, but it barely covers this dangerous section. I cannot fully remember where the logging trucks turn off, but at the McArthur Burney Memorial Park they are more or less gone.
https://maps.app.goo.gl/rwtqfaNqpj6ETZEG82 Sierra Cascades detour: I had to make a big detour (going S on HWY 395 from Bishop) and started mapping myself only using google maps. It was a VERY big mistake and I had to switch back onto the official ACA route again due to safety. The problem road was the stretch is between Adelanto, CA and Lucerne Valley, CA. The biggest part was on HWY18. For the first time in my life I feared for my life on this stretch. No shoulder, cracked up, broken road surface and dangerous motorists. I got so scared in Lucerne Valley that I had to climb some 6000 ft up to Big Bear Lake and rejoin the route.
https://maps.app.goo.gl/aHrnyZuKW3SbjDUt7What are your most dangerous roads?
Lucas