Awesome, I love to see the effort put forth. Also, Who here rides mountain bikes?
Well, any time you travel those switchbacks on the Boulder wagon road you are breaking the law (as you can see from the .pdf). Same as when you go over the needles eye tunnel which is the popular route. Over the needles eye gets you into wilderness again. The only legal way is to scramble over the literal tunnel hugging it to the east which few folks do. Why do I mention this? Because the MTB'ers need to know this, maybe it will get them on our side to open the routes legally. Right now all but OHV folks think its open.
Also, If you haven't been up there it's awesome. The twin trestles are magical. The meadow on the east side where the Boulder Wagon Road traverses is gorgeous. the ridge above yankee doodle provides a great view of below. Above the tunnel in the wilderness is a lot of cool stuff to see also.