A state highway to be known as state route number 278 is established as follows:
Beginning at a junction with state route number 27 in Rockford, thence easterly and southerly to the Washington-Idaho boundary.
RCW 47.17.503
State route No. 278.
1991 c 342 s 26.
Official source: Washington State Legislature. Reproduced from public-domain Washington statutes; confirm against the official source for the current text. Not legal advice.