Have you ever driven down a major road, or looked at a major road on a map, and wondered why it made a jog of a hundred feet or so when crossing another major road, instead of crossing it at a perfect right angle? That's a shadow of a surveyor's error a hundred years or so ago. The square plats or sections or townships didn't always line up quite right, and when they ended up being owned by different landholders, and when roads were run (for obvious reasons) along the lines between the sections, the roads ended up with jogs in them, too. It's never possible to entirely correct a jog, because that would mean transferring land from one landowner to another, and (eventually) relocating all of the drainage ditches and telephone poles and water mains and buildings that end up being built along the roads. So the jog is perpetuated indefinitely, even though none of the telephone poles and water mains and buildings that now constrain it had been built at the time the original error was made.