The Northwest Transfer Station is located on Fryrear Road between Bend and Sisters.  Head north on Fryrear Road (about 5 miles west of Tumalo off of Hwy 20).  The station is approximately 4 miles down the road.  Signs will mark your way.
The Northwest Transfer Station can also be accessed from Hwy 126 between Sisters and Redmond. Just head south on Fryrear Road; the transfer site is approximately 1 mile down the road. 

Hours of operation are Fri, Sat, Sun and Mon from 8:00 am - 4:00 pm.