Beginning at U.S. Route 2 (US 2) north of Mead, the highway travels east through unincorporated Spokane County and northeast into the Selkirk Mountains, ending at the entrance to Mount Spokane State Park.

The roadway, first constructed in the 1890s and reconstructed several times, was designated as SR 206 during the 1964 highway renumbering.

[3] The highway travels east under a BNSF Railway line and serves Mt.

[1][4] SR 206 turns northeast, parallel to Deadman Creek, towards Green Bluff and the Selkirk Mountains.

In 2011, WSDOT calculated that between 210 and 10,000 vehicles per day used the highway, mostly in the Mead area.