I think the issue about the motorcycle was muddled when banana said:
"That's exactly why I want to use my bike, just to travel to and from DCHS!"
Many of us interpreted that to mean he wanted to ride it directly to the hot springs. We now realize he meant to say something like "ride it to the DCHS trailhead".
Enough semantics. Banana, if you don't take it on dirt, your best option is the Bradford Ridge trail.