To be fair, how many ramps are actually that long in SW PA?
Most of the heavy traffic merge lanes do, however, tend to be close to 100 yards long. The hills, old wagon trails and people who tend to build their houses so close to the road that you can spit watermelon seeds on the traffic from your front porch does make for some pretty unique situations.
Another thing really weird about SW Pennsylvania is the sheer number of household natural gas meters which stick out almost to the edge of the road. I understand it is galvanized high grade pipe going into these things. but the sheer amount of rust build-up and locations of these things are disasters waiting to happen, particularly given the fondness of so many of our locals to drink and drive.