Frozen LTL

Tough one. I don't deal with either of them, but ERB and Transx come to mind.
Good luck.
 
you're probably looking for a carrier who can have different temps in the trailer.
as a broker we tend to stay away from Reefer LTL, it's just not easy to offer & be able to produce capacity for customers.
 
Frozen LTL is easier to achieve than Reefer LTL

Check with CRE Transport - Brian did a couple of LTL Frozen for me out of MI in the past so...might be able to help with Chicago?

Have fun! ;)