This eye catching insect is the adult stonefly.
Observation by Eric Alstrom
Have not seen this insect in our area before.
Comment by Derek Sykes:
That's a stonefly adult. They are short lived and don't feed. The larvae are aquatic in freshwater flowing waters and are long lived. This is one of the largest species of stoneflies in Alaska.
Observations From Members 
Plecoptera
iNaturalist