I was looking at pictures of this bridge on Flickr and other sites, and I'm not sure if it's a cantilever deck truss or not. Here's two pictures of it on Flickr:
http://www.flickr.com/photos/jag9889/1627148587/
http://www.flickr.com/photos/jag9889/1627148587/
The bridge appears to be a simple deck Warren truss, similar to the former I-35W bridge, only a lot smaller.