Katy Trail in Dallas is a MUP with a seperate walking path(on the left of photo) made of old Nike shoes. It actually connects directly to the American Airlines Center where the Mavericks/Stars play. It is a victim of it's own awesomeness. Too many people use the trail creating traffic jams of walkers with dogs.

It does connect Downtown with Southern Methodist University with only two level street crossings and 14 bridges connecting the rest. Traffic free for the most part. The money used to build the MUP was mostly done with private donations. That keeps the city from screwing things up for the most part.

I'd like to see more MUPs built like this. One of the best designs I have ever seen. It's even lighted to 11pm every night.