White Pass Stages - served Chehalis, Onalaska, Ryderwood, Morton, Alpha, Winlock, Napavine.
College Place Bus Line - served College Place, Walla Walla, Oregon state line.
Lucerne-Holden Bus Line - served Lucerne and Holden.
Twin City Buses - some segments presumably replaced interurban railway, served Raymond, South Bend, Willapa.