Location: Main St and Lyndon St, Caribou
A few blocks after the turn from the 89 junction, keep right for 161B south and 164 north (now heading due south) to U.S. 1.
Location: Main St and Fort St, Caribou
Soon thereafter, SR 161B splits to head east to U.S. 1 and its parent route. Stay straight for SR 164 north heading south.
