This happens too often for there NOT to be something wrong about the posted bridge height. Hopefully this will be taken care of when they revamp the station.
This one's a bit more understandable because it's a rental truck. To all the folks who think there's something wrong with the posted height, the insurance companies would be all over the city/CTA if the posted height were wrong. So, I find it highly unlikely the posted height is wrong.
It's Chicago. Nothing would surprise me here.