Washington state line no relation U.S. Route 95 in Idaho
State Highway 6 (SH-6) is a state highway in northern Idaho running from the Washington state line near Potlatch to Santa. It is 40.645 miles (65.41 km) in length and generally runs southwest to northeastRoute description
SH-6 begins at the Washington state line in Latah County as a continuation of Washington State Route 272, then heads east to an intersection with U.S. 95, with which it briefly overlaps before diverging and continuing east into Potlatch.  It continues east to an intersection with SH-9 near Harvard.
SH-6 continues northeast and north across the Palouse River into Benewah County, generally north through White Pine Drive; and area of old-growth white pine trees in the Hoodoo Mountains in the St. Joe National Forest. It terminates at a junction with SH-3, west of Santa.
Between Harvard and Emida, the route crests at an elevation of about 3,600 feet (1,095 m) above sea level. This is a park 'n' ski lot (Palouse Divide) for cross-country skiing, and the turnoff to North–South Ski Bowl, a defunct alpine area which is now a private conference and retreat lodge.
Prior to the 1960s, SH-6 was signed as an alternate route of U.S. 95, which continued north along present-day SH-3.
no relation