State Route 283 (SR 283) is a 14.86-mile-long (23.91 km) state highway serving rural Grant County in the U.S. state of Washington. The highway travels northeast from SR 281 at its interchange with Interstate 90 (I-90) near George to SR 28 near Ephrata. SR 283 was created during the 1964 highway renumbering as the successor to a branch of Primary State Highway 7 (PSH 7), codified in 1949 and built in the 1950s.