 The North Head Road portion of SR 100 , traveling west from Ilwaco to the Pacific coast and south to Cape Disappointment within Fort Canby State Park , has existed as a paved roadway since 1957 . SR 100 was established in 1991 by the Washington State Legislature and was made into a complete loop route around the cape , with a short spur route traveling south into Fort Canby State Park , later renamed to Cape Disappointment State Park . Robert Gray Way was rebuilt after a 1994 winter storm washed away the roadway into Baker Bay . 
