US 68 west end, 1957(?)-present
Reidland
US 641 north end, 1955-1972
near Henderson
US 68 west end, 1926-1957(?)
near Paducah
US 641 north end, 1972-present
Marion
US 241 north end, 1926-1929
Hopkinsville
US 79 north end, 1944-2007
Russellville
US 431 north end, 1954-present
Owensboro
US 42 west end, 1950s(?)-present
Louisville
Common: US 42 / US 168
Louisville. US 42 west end (1932-1950's[?]); US 168 west end (1926-1934) (this is only my best guess, based on a 1950 KY DoT map of Jefferson County)
US 227 north end, 1930-1972
Carrollton
US 460 west end, 1977-present
Frankfort
US 227 north end, 1928-1930
Paris
US 227 south end, 1928-1960(?)
Richmond
US 227 south end, 1960(?)-1972
White Hall
Common: US 150 / US 168
Mount Vernon. US 168 east end (1926-1934); US 150 east end (1934-present)
Common: US 23-123-119
Pineville. US 23 south end (1929-1930); US 123 south end (1930-1934); US 119 south end (1934-present)
US 123 north end, 1930-1934
Jenkins
Common: US 62 / US 68
Maysville. US 68 east end (1926-1933); US 62 east end (1930-1932)
US 79 north end, 2007-present
Russellville