Temporary routes complete a gap between two segments of a parent route that exists because the parent route through the area has not been fully constructed. They serve as a long-term detour until the parent route's planned path is completed, at which point the Temporary designation is either removed or replaced by another designation such as Alternate or Business.
Temporary routes bridge the gap between two segments of a primary road that hasn't been completed yet. They serve as a long-term detour until the planned path of the parent route is finished, at which point the Temporary designation is either removed or replaced by an alternative label.