And somehow the town with the joke bumper stickers managed to live up to them again. Your Name Finally Caught Up to YouThe town at Exit 97 got its name because the original settlement sat on piles of river silt. Get our free mobile appSince 1989, locals have been driving around with bumper stickers that read SILT HAPPENS. That Was, Until Monday NightA mudslide shut down both directions of Interstate 70 between Silt and New Castle, and by 4:30 Tuesday morning the interstate was still closed. Turns out "SILT HAPPENS" works a lot better on a bumper sticker than it does as a weather report.