1977 Utah state route renumbering

July 2025 January 2025 March 2023 In 1977, the Utah State Legislature changed its system of how state route numbers were used and assigned. Prior to 1977 Utah used a system where every U.S. Highway and Interstate Highway traversing the state was assigned a different Utah state route number. There were many instances where having different route numbers for signing and legislative purposes could cause confusion. For example, the highway signed Interstate 15 in Utah was legislatively defined State Route 1, not route 15. State Route 15 also existed, but was a different route that passed through Zion National Park.15 September 11, 2007 In 1977, the state changed to a system where all highways would have the same legislative route number as its signed route number. For example, Interstate 15 would also be route 15 for legislative purposes. Many state routes were re-numbered to eliminate instances where a state route used the same number as a U.S. Highway or Interstate Highway traversing the state.163 April 9, 2023 In cases where two or more routes overlapped, only one of the route numbers sharing the same roadbed would be used in the legislative designation. The other routes in the overlap would have a discontinuity in the legislative description. For example, the stretch of highway between Green River and Crescent Junction is legislatively designated only Interstate 70. The other highways using this same pavement, U.S. Route 6, U.S. Route 50 and U.S. Route 191 all have legislative gaps in their routes for this portion.1-901 September 11, 2007 Pre 1977 state route numberRoute descriptionPost 1977 state route numberNotes1Legislative designation for I-15 also US-91 prior to 1974.152Legislative designation for I-80803Legislative designation for I-84844Legislative designation for I-70705Legislative designation for Interstate 2152156Legislative designation for US-4040SR-6 immediately re-used as legislative designation for US-67Legislative designation for US-189189SR-7 was later re-used for an unrelated highway.8Legislative designation for U.S. Route 89 from Moark Junction to north of Lehi89SR-8 was later re-used for an unrelated highway.9Legislative designation for current US-191 between Crescent Junction and Monticello and US-491 between Monticello and Colorado. At one time these highways had a single signed designation, U.S. Route 160163, 666SR-9 was immediately re-used on an unrelated highway. This portion of 163 has since been re-numbered 191, and 666 has been completely replaced with 491.11Legislative designation for US-89 and US-89A from state line to junction with I-7089/89AKept and signed as designation for US-89A south of Kanab. Formally replaced with route 89A in 2008.13Legislative designation for US-89 from Logan to Bear Lake89SR-13 immediately re-used for an unrelated route.15Zion Park Scenic Byway9SR-15 immediately re-used as the legislative designation for I-1516Route along the western shore of Bear Lake from the Wyoming state line near Woodruff to the state line near Paris, Idaho16, Eastern segment of 30, 89Route truncated, the southern portion remains SR-16 today, while the northern portion was transferred to other routes, including the part signed as US-89.26A signed route between Delta and Salina, now part of US-50.50SR-26 immediately re-used for former SR-50. SR-50 and 26 exchanged designations27Legislative designation for US-6 from the Nevada state line to Green River628Route formerly continued south of its current terminus at Gunnison as a legislative designation for a portion of US-89 to Salina89, 28Portion used for US-89 truncated, independent portion kept32Legislative designation for U.S. Route 89 from SR-28 at Gunnison to US-6 at Thistle, Utah89SR-32 eventually reused for a former portion of U.S. Route 18935Route formerly continued north from current terminus as the legislative designation for US-189 north to I-80189, 35Portion used for US-189 truncated, independent portion kept40North–south road west of Ogden134SR-40 immediately re-used as the legislative designation for US-4047Legislative designation for U.S. Route 163 from Arizona to Monticello, was signed prior to 1971.163North of Bluff has since been redesignated US-19149Legislative designation for US-89 between I-15 near Lagoon to I-84 near Ogden 8950Riverdale Road in Riverdale and Ogden26SR-50 immediately re-used as the legislative designation for US-50. SR-50 and 26 exchanged designations51Connector between SR-16 and the Wyoming state line in the far north eastern corner of UtahEastern segment of 3069Alternate route between Brigham City and Logan via Bear River canyon.Central segment of 30, 69The southern portion of the route (south of Deweyville) kept the SR-69 designation; later extended north to Collinston; to be later renumbered SR-3870Route along the north shore of the Great Salt Lake in extreme northern part of the stateWestern segment of 30SR-70 immediately re-used as the legislative designation for I 70.80Alpine Loop Scenic Byway92SR-80 immediately re-used as the legislative designation for I-8084Segment of former US-91 near Roy126, 13SR-84 immediately re-used as the legislative designation for I-8485Legislative Designation for the reroute of US-91 bypassing downtown Brigham City9189Bypass of Eden, Utah169SR-89 immediately re-used as the legislative designation for US-89 SR-169 has since been removed from the state route system.102East of Lampo Junction to Deweyville30, 102106Becks to Farmington (part was the legislate route of US 89)89, 106151Legislative designation for US-189 from Francis to Hailstone Junction189163Segment of former US-91 near Levan78SR-163 immediately re-used as the legislative designation for US-163169Legislative designation for US-89 from SR 106 in Bountiful to north of Bountiful89259Legislative designation for US-89 from Kanab to the Arizona border89271Legislative designation for U.S. Route 89 from Near Draper Crossroads to SR 106 in Becks89 References External links 1-901 Renumbering Utah State Route Renumbering, 1977 Utah State Route Renumbering, 1977 1977 renumbering Category:1977 establishments in Utah Category:1977 disestablishments in Utah Category:Highway renumbering in the United States