RCW 47.17.163: State route No. 100.

A state highway to be known as state route number 100 is established as follows:

Beginning at a junction with state route number 101 in Ilwaco, thence westerly and southerly to Fort Canby state park; also

Beginning at a junction with state route number 100 in Ilwaco, thence southerly to Fort Canby state park.