RCW 47.17.360State route No. 173.A state highway to be known as state route number 173 is established as follows:Beginning at a junction with state route number 17 at Bridgeport thence northwesterly on the south side of the Columbia river to a junction with state route number 97 in the vicinity of Brewster.[ 1970 ex.s. c 51 s 73.]
Washington Legal Code