skid row (n.)

place where vagabonds, low-lifes, and out-of-work men gather in a town, 1921, with reference to Seattle, Washington, U.S., a variant of skid road "track of skids along which logs are rolled" (1851); see skid (n.); the sense of which was extended to "part of town inhabited by loggers" (1906), then, by hobos, to "disreputable district" (1915); probably shaded by the notion of "go downhill."