AARoads:United States/Utah/State line crossings
Nevada
Other side: SR 75 (by 1942)
Other side: SR 25 → SR 319 (by 1932)
- SR-21, 1927-present
Other side: SR 73 → SR 487 (by 1942)
Other side: SR 14 → US 6 (by 1932)
- Never numbered, but may have been a state highway in the 1910s
Other side: SR 2 (1917)
Other side: SR 1 → SR 224 (1917)
Other side: I-80
Other side: SR 30 → SR 233 (by 1933)
Idaho
- SR-42, 1927-present
Other side: US-30S → SH-81 (1920s)
Other side: SH-36 → US-191 → I-15 (1920s)
Other side: SH-35 (1953; had been an unnumbered state highway)
- SR-200, 1939-present
Other side: SH-34 (1951)
Other side: US-91 (1920s)
Other side: SH-35 → US-89 (1920s)
Wyoming
Other side: WYO 65 → WYO 89 (1920s)
Other side: WYO 65 → WYO 89 (1920s)
Other side: WYO 10 → US 30S → I-80 (1920s)
- SR-133, 1941-1969
Other side: N/A
- SR-150, 1953-present
Other side: WYO 150 (1920s)
- SR-135, 1935-1969
Other side: N/A
- SR-43, 1927-present
Other side: WYO 414
- SR-43, 1927-present
Other side: WYO 530
Colorado
- Never a state highway
Other side: SH 318 (1970s)
Other side: SH 2 → US 40 (1920s)
- SR-45, 1927-1943
Other side: SH 64 (1920s)
- SR-45, 1945-1968
Other side: N/A
Other side: SH 4 → US 50 → I-70 (1920s)
- SR-46, 1927-present
Other side: SH 90 (1920s)
Other side: SH 10 → US 160 → US 666 → US 491 (1920s)
- Never a state highway
Other side: SH 32 (early 1960s)
Other side: SH 41 (1960s)
Arizona
- US-191, 1983-present
Other side: US 191 (by 1983)
Other side: SR 464 → US 163 (by 1963)
Other side: US 89 (by 1961)
Other side: US 89 → US 89A (1927)
Other side: SR 389 (by 1961)
- SR-64, 1931-1969
Other side: N/A