No.
That red line blithely crosses over some very rugged terrain, not to mention that much of it is designated wilderness.

There is a lot of the road (hwy 1) built on top of the Franciscan complex, which is a jumbled up and sheared mess of rocks, not known for its resistance to slope failures. But they didn't have much choice.

It would be a lot cheaper and quicker for someone to offer a ferry service for cyclists around the slides.