RCW 47.17.520State route No. 290.A state highway to be known as state route number 290 is established as follows:Beginning at a junction with state route number 90 in Spokane, thence northeasterly by way of Millwood, Trentwood, and Newman Lake to the termination of Idaho state highway number 53 at the Washington-Idaho boundary line.[ 2005 c 14 s 1; 1977 ex.s. c 6 s 1; 1970 ex.s. c 51 s 105.]
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