The state police hide just beyond sight under the Chestnut Street overpass just past Mercy Hospital on your right. You can’t see the troopers because they are hidden by the overpass. Police hide even further on the Southbound Ramp by blending in the trees so they are even further obscured from sight. The speed limit is 45MPH but it is a an open highway and most travelers are going 55-65 on that stretch. It really doesn’t make since for the speed limits to be that low on the straight stretch leading into the overpass. You usually have 2-3 troopers working together where one hits you with the handheld radar and the others chase you down.