Wash. Rev. Code § 47.17.745
A state highway to be known as state route number 527 is established as follows: Beginning at a junction with state route number 405 in the vicinity of Bothell, thence northerly to a junction with state route number 5 in Everett.
[ 2011 c 201 s 1; 1970 ex.s. c 51 s 150.]