Travel Washington / Grape Line offers 1 Zillah boarding location for your travel convenience:

Zillah Park & Ride – 117 – 1st Ave Zillah, WA 98953
General Info: Advance, paid reservations for pick-up at the Touchet boarding location are required.
Directions: Take Exit 52 off I-82 towards 1st Ave, stay on 1st Ave until you reach the parking lot / Teapot Dome Historical site which will be on the left hand side.
Boarding Location: Bus shelter NW corner Zillah Park & Ride adjacent to Stewart Park and loctated on the northwest side of the Teapot Dome Historical Site.