Not too shabby. I think you're headed in the right direction mostly, except I don't care too much for that big rectangular road thing in the middle...its either the fact that its rectangular, which doesn't suit wheeled travel very well, or the fact that the roads coming out of it seem somewhat awkwardly placed...I bet if you clean that up a little and/or make it rounded/ovaled it would probably improve the whole street layout really.

Also, the multiple bridge types seems to be a little weird too.