Something that aggravates me...

I just rewatched the episode "Sideshow Bob Roberts", and I never could put my finger on what was wrong with that episode. But today I figured it out. What did they do about the Matlock Expressway? We know Sideshow Bob was taken down at the end of the episode, and thus the Simpson home was saved. Well, what did they do with the expressway? It never shows in the background after this episode. In the US, they don't just make a u-bend around the property like they do in China. They would've had to tear the highway down back to a point that completely avoids Evergreen Terrace. And what about Flanders? The highway would've went through his property too. Why wasn't he even the least but upset? But seriously, it would've cost millions if not a billion in 1994 to reroute an already-built expressway. What happened?