It really does, according to the Legislature.  "(9)	SR-30. From the Utah-Nevada state line northeasterly through Curlew Junction to Route 84 west of Snowville; then beginning again at a junction with Route 15 west of Riverside easterly through Collinston to Route 91 in Logan; then beginning again at a junction with Route 89 in Garden City southeasterly through Sage Creek Junction to the Utah-Wyoming state line." [https://le.utah.gov/xcode/Title72/Chapter4/72-4-S108.html?v=C72-4-S108_1800010118000101]