US 49 north end, 1980-present
Piggott
US 49 north end, 1963-1969(?)
Brinkley
US 49 north end, 1969(?)-1978
Brinkley
US 49 north end, 1978-1980
Jonesboro
US 412 west end, 1982-1989
Walnut Ridge
US 167 north end, 2000-present
Ash Flat
US 167 north end, 1961-2000
Hardy
US 167 north end, 1926-1950s(?)
Little Rock
US 165 north end, 1982-present
North Little Rock
US 165 north end, 1926-1982
near Dermott
US 270 east end, 1982-present
White Hall
US 270 east end, 1950s-1982
Pine Bluff (a 1953-57 ADHT county map appears to show the endpoint here)
US 270 east end, 1940s(?)-1950s
Pine Bluff
US 270 east end, 1930-1935(?)
Hot Springs
US 64 east end, 1926-1930
Conway
Common: US 64 / US 63
Marion. US 64 east end, 1930-1932 (according to 1925-1933 ADHT county map); US 63 south end (signed), 1960s-1990.
US 63 south end, 1926-1935
Turrell (according to 1925-1933 ADHT county map)
US 63 south end, 1990-1999 (signed)
Turrell
US 63 south end, 1935-1960s (signed)
West Memphis
US 79 north end, 1935-1940
near West Memphis
US 79 north end, 1940-1941
near West Memphis
US 271 north end, 1926-1930s
Fort Smith
US 271 north end, 1930s-1950(?)
Fort Smith
US 271 north end, 1976-present
Fort Smith
US 271 south end, 1926-1930
near Mena
US 278 west end, 1998-present
Wickes
US 371 north end, 1994-present
DeQueen
US 82 west end, 1932-1934
Texarkana (this location is my best guess)
US 425 north end, 1989-2003(?)
Pine Bluff (as of 2007, this is where northbound US 425 signage still ends)
US 425 north begin, 2003(?)-present
Pine Bluff (this is the official endpoint, and it is where southbound US 425 signage begins, but northbound 425 signage still ends east of here)
US 271 north end, 1950(?)-1976
Fort Smith
US 167 north end, 1950s(?)-1961
Little Rock