One thing that this enormous city is big on is what is commonly known as the 'glorieta'. This is a circle drive, at a crossroads, which cars flow/fly in and out of! There is an art form to this 'merging'. If you don't know where you are going, or are not somewhat aggressive, you could end up circling the thing for quite some time, or not getting 'in' at all! The purpose (apparently) is to keep traffic flowing rather than having it grind to a halt. Here's an overhead view of a very large one!
Matute Remus bridge on Lazaro Cardenas
This is the most colourful bridge in Guadalajara, and it is located on the major highway that runs right thru the heart of the city. It actually changes to different colours throughout the night. Reminds me of the new bridge near the Human Rights museum in Winnipeg.