@Shawn - I've been a long time lurker on the board. I'm from Butler. I've been involved with the group here that is laying out a shared roadway system on the street here in town. We just morphed into a City Bike Commission. I helped decide what streets we wanted to include and have done most of the field work/measuring on the streets.
I don't know that qualifies me as an expert, but I'll pretend I am if you're willing to buy into it. :>)
I think I may be able to save you some time re-inventing the wheel. We spun ours for about six months before we figured out how to proceed.
I think the conversation will be more efficient by phone or ultimately f2f than e-mail. If you'd like, PM me a phone number so I can contact you.