I have seen cops sit on the Innovation bridge that goes over 10/61 and heads to the 3M factory. I have been hit by laser from them sitting On the bridge shooting cars from the front and the back as they pass under the bridge. I see them sitting on the East side of the bridge shooting both east and west bound traffic, not sitting under the bridge but sitting on top of the bridge. I have only seen this trap late at night, so I would say you are pretty safe from that trap during the day.