Does "Fut" imply that it will be 395 in the "Future"? It looks like that could be the idea (???) based on wa.gov, there is a project that "...will connect to US 395 at Wandermere and US 2 to the north and connect to I-90 near the Freya/Thor interchange to the south."

Ref: https://wsdot.wa.gov/construction-planning/major-projects/north-spokane-corridor