Career
He served as a deputy representative in the Norwegian Parliament from Sør-Trøndelag during the term 1958–1961. On the local level Steinvik was mayor of Frøya municipality from 1968 to his death in 1975.
He served as a deputy representative in the Norwegian Parliament from Sør-Trøndelag during the term 1958–1961. On the local level Steinvik was mayor of Frøya municipality from 1968 to his death in 1975.
