The Miami Line is an urban-scale multicolored neon-light installation, designed by Rockne Krebs, in the U.S. city of Miami, Florida, stretching 1,540 feet (470 m) along the Metrorail bridge over the Miami River. When Krebs created the first phase of The Miami Line in 1984, it was 300 feet (91 m) long. Because of to its great popularity, the piece was greatly expanded in 1988 to a total of 1,540 feet (470 m).