page_title: Utah State Route 30
section_title: History
hierarchical_section_title: Utah State Route 30 / History
context_page_description: State Route 30 is a state highway in the U.S. state of Utah. It is the only highway signed as a Utah state route to traverse the entire width of the state. Legislatively the highway exists as 3 separate segments. With implied connections via Interstate 84 and U.S. Route 89, the highway is drivable as a continuous route from Nevada to Wyoming. The western segment is a historic corridor paralleling the pre-Lucin Cutoff routing of the First Transcontinental Railroad. A portion of the eastern segment has been designated the Bear Lake Scenic Byway as part of the Utah Scenic Byways program. The route was created in 1966 by combining several state highways into a single designation.
context_section_description: The western portion follows the general corridor used by the California Trail, as well as the First Transcontinental Railroad, completed in 1869. This portion of the railroad was bypassed with the construction of the Lucin Cutoff across the Great Salt Lake. Later the road would be part of the Midland Trail, and it was added to the state highway system in 1912. The entire roadway from Nevada via Snowville to Tremonton remained a state highway through 1925, but in 1927 the portion west of Curlew Junction was dropped, with the remainder serving as part of U.S. Route 30S (US-30S), designated in 1926, which continued northwest to Idaho. The road to the Nevada state line, where it continued as SR 30, was restored in 1931 as State Route 70.
  The central portion, between Tremonton and Logan, was added to the state highway system in 1931 as SR-102 (Tremonton to Deweyville) and SR-69 (Deweyville to Logan). From 1938 until the mid-1950s, the SR-69 portion was marked as US-89, which, instead of overlapping US-91, followed the longer all-weather route from Brigham City into the Cache Valley. Various cutoffs were formed at the west end: State Route 154 came first in 1933, connecting SR-41 (now SR-82) in Garland with SR-69 near Collinston via Garland Road. State Route 85 was built in 1940 as a federal aid project, connecting SR-41 (now SR-13) in Riverside with SR-154, and numbered by the legislature in 1945, only to be given back to the county in 1953. The roadway from Riverside east to SR-154 was brought back into the state highway system in 1962 as part of SR-84, which was to end at a junction with the proposed I-15 between Riverside and Collinston. When SR-154 was deleted in 1969, the SR-84 designation was extended east to Collinston, replacing part of that route. By 1982, proposed I-15 had been moved west to its current alignment north of Tremonton, and a new State Route 129 was created to connect it with Riverside. For continuity, SR-13 (which had replaced SR-84 in 1977) was cut back to Riverside, with the Riverside-Collinston portion also becoming SR-129. In 1969 the piece east of Bothwell Junction became part of a western extension of SR-102.
  The portion east of Garden City was added to the state highway system in 1910 (Garden City to Sage Creek Junction) and 1915 (Sage Creek Junction to Wyoming). The former became part of SR-3 in the 1920s, and in 1927 the legislature added the latter as a branch of that route, only to split it off as State Route 51 in 1931. SR-3 was renumbered to SR-16 in 1962.
  In 1966, the counties in northern Utah requested that the State Road Commission designate a single route number to run east–west across that part of the state. Since Nevada's portion of the highway, connecting to US 40 at Oasis, was numbered SR 30 (changed to SR 233 in the late 1970s), Utah selected that number, and requested that Wyoming similarly redesignate their Highway 89, which connected to US 30N (now US 30) at Sage. (Wyoming never did so.) The former SR-30 in Sanpete County was renumbered SR-117. However, unlike other renumberings, the commission did not request that the legislature change the legal descriptions; instead, since such a change "would involve a tremendous number of changes in our present record keeping system", the old numbers were kept and marked on small rectangular signs below the SR-30 shields. SR-30 was marked along the following routes:
  SR-70, Nevada to Curlew Junction
  US-30S, Curlew Junction to Snowville
  I-80N, Snowville to Bothwell Junction (now I-84)
  SR-102, Bothwell Junction to Deweyville
  SR-69, Deweyville to Logan
  US-89/US-91 in Logan
  US-89, Logan to Garden City
  SR-16, Garden City to Sage Creek Junction
  SR-51, Sage Creek Junction to Wyoming
  In the 1977 renumbering, the legislative designation was changed to SR-30, except on the portions that were signed as U.S. or Interstate Highways (hence the gaps at I-84 and US-89). No signage changes were required except for the removal of the rectangular signs below the SR-30 shields. In 1989, the commission resolved that, once I-15 was completed north of Tremonton, 
caption: Signage used from 1966 to 1977 on SR-30
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