What kind of motorcycle? The last time I crossed over that road once you leave CO 133 (Placita area) it is dirt. It still looks that way per Google maps sat view. Got a KLR? Great. Valk, BAD.
It was a beautiful drive but it was the worst 30 miles of washboard dirt road ruts I've ever driven across.
Raymond
http://www.hanselmannphotography.com/nTarge_newsletters/Newsletter8-1-06/GothicValley.html"Be aware that there is often a snow drift that closes Gothic Road about mid way up the valley until the middle of July or so. There is also a peaceful picnic area on the right about half way up the valley that is a great place for lunch. Gothic Valley can be a busy place in mid summer and the main road can get a bit dusty"