Head east on the Mount Baker Highway to about milepost 17 and Mosquito Lake Road. After about 5 miles take a left on Middle Fork Road. After 5 more miles take the left fork onto Forest Road 39. In 5 more miles park at the undriveable Wallace Creek bridge/gate.
Hike along the road for about 1-1/2 miles to the trailhead on the right (across from the parking area).