The Rev. Alva Lincoln Smith, 70, pastor emeritus of the Lake Ridge Baptist Church in Woodbridge, Va., and a former pastor of Congress Heights Baptist Church in Washington, died of pulmonary fibrosis Monday at Potomac Hospital in Woodbridge.

Mr. Smith was an assistant pastor of the National Baptist Memorial Church here for none years before transferring to the Congress Heights church, where he served as pastor from 1946 to 1961.

During that time, he also served as the first superintendent of city missions for the D.C. Baptist Convention and was instrumental in establishing or assisting 10 churches in Southern Maryland.

Mr. Smith later served as pastor of the Groveton Baptist Church in Alexandria. In 1972, he established the Lake Ridge Baptist Church in Woodbridge and served as its pastor until retiring in 1976, when he was named pastor emeritus.

Mr. Smith, who lived in Woodbridge, was born in Alexandria, La. He graduated from Louisiana College in Pineville in 1931 and earned a master of theology degree from the Southern Baptist Theological Seminary in Louisville in 1934. He later served as a trustee of that seminary and the New Orleans Baptist Theological Seminary. He was a past president of the D.C. Training Union Association.

Survivors include his wife of 45 years, the former Jewell Kees, of Woodbridge; two sons, David, of Beltsville, and Richard, of Vienna, and four grandchildren.