Beginning in the 1960s the development of the 610 Loop caused the focus of the Houston area to move away from Downtown Houston. Joel Barna of "Cite 42" said that this caused Greater Houston to shift from "a fragmenting but still centrally focused spatial entity into something more like a doughnut," and that Downtown Houston began to become a "hole" in the "doughnut." As interchange connections with the 610 Loop opened, according to Barna Downtown "became just another node in a multi-node grid" and, as of 1998, "has been that, with already established high densities and land prices." By 1998 Beltway 8 neared completion and development increased in the central city. Barna said that "it's as if Houston had stretched out so far that it its sprawl began doubling back upon itself."