Utah State Route 139

Utah State Route 139 (SR-139) is a 1.408 mi state highway in the state of Utah that connects U.S. Route 6 (US-6) to SR-157 in Carbon County.

Route description
The route begins at US-6 south of Helper in Spring Glen as Spring Glen Road. Classified as a rural major collector, it crosses Spring Glen Creek as it heads north toward its northern terminus at SR-157, spanning a distance of 1.4 mi.

History
State Route 139 was originally established in 1933 as the road from former Route 8 (now US-6) west to Consumers, a distance of about 13.3 mi. In 1969, SR-139 was 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 13.3 mi 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 0.1 mi when reconstruction of US-6 in the area necessitated moving its intersection with SR-139 southward, resulting in the current alignment.