There's a weird bit on I-83 where it intersects with itself. Just north of Baltimore I-83 merges with the Baltimore Beltway for a few miles. Now this intersection is unusual. If you are coming from downtown, there is a fork in the road. One side goes to the Beltway and eventually York, PA. The other one stays marked as I-83 for a mile and then intersects Falls Rd. Now heading south, the Falls road spur is marked as I-83 at the intersection. However the first exit is for I-695 East and I-83 North. In other words there is an exit from 83 south to 83 north. .