
I should remind you that there are many areas of Chicago that have low clearance restrictions. If you're using MS Streets & Trips, it will NOT route you around these obstacles nor advise you of them. I strongly suggest you purchase a Chicago Underpass Clearance Map for about $4.95. My tractor is (about )12' with low stacks. I drive a flatbed that is usually not loaded high - so I can pretty much get around most of Chicago without a problem. There was a rig 13' 6" high stopped in front of me. Why he was going this way, I don't know. An old guy was driving. So there he was stopped right before the bridge labeled 13" 2". He looked at me, lifted his arms, kind of asking what should he do? I did not respond. A bystander waved him under and through. He hit the rear of the trailer against the bridge. I didn't see any damage unless there was a hole in the back rear top of the trailer. What can I say? He pulled over after he "cleared" the overpass to get out and inspect any damage. I came through and passed him. I hope he realized that he has two more low clearance overpasses to get under before he gets to the interstate.