Utah State Route 268 grade-level at 400 West and continues east for another block before terminating at US-89 (Beck Street). The State Road Commission designated SR-268 in 1960, connecting proposed I-15 to SR-1 (US-89/US-91) along 600 North. Utah State Route 268 State Route 268 is a state highway in the U.S. state of Utah that connects I-15 to US-89 in a span of . The highway is completely within Salt Lake City and is routed along 600 North. The highway begins just west of the interchange with I-15 at 800 West. Immediately following that intersection, a short viaduct begins. After the structure tops out,
Utah State Route 139 extended east past US-6 and north through Spring Glen to meet State Route 157, eight years after SR-157 had been extended north from Spring Glen to Helper. The route was significantly shortened in 1975, with the west of US-6 being deleted from the state highway system, leaving SR-139 as a short connector between US-6 and SR-157. In 1978, SR-139 was lengthened by when reconstruction of US-6 in the area necessitated moving its intersection with SR-139 southward, resulting in the current alignment. Utah State Route 139 Utah State Route 139 (SR-139) is a state highway in the state of Utah that