Walter J. Myskowski, 62, a Washington lawyer who specialized in transportation law, died Tuesday at his home in Bethesda. He had a heart ailment.

He was an attorney-adviser with the Interstate Commerce Commission in Washington from 1950 to 1954, and then worked as an attorney for a railroad.In 1956, he became an associate in the Washington law firm of LaRoe, Winn & Moerman. He started his own practice in 1961.

Mr. Myskowski was a native of Lowell, Mass., and a graduate of George Washington University. He was a 1948 graduate of Harvard University Law School. He served with the Army during World War II.

He had been secretary of the Association of ICC Practitioners from 1963 to 1968, and was editor-in-chief of the ICC Practitioners Journal from 1957 to 1958.

He was a member of the D.C. and American Bar associations and was admitted to practice before the U.S. Supreme Court.

Mr. Myskowski had been a resident of Bethesda since about 1957.

Survivors include his wife, Ruth, of Bethesda; two daughters, Dr. Patricia Swistel of New York City, and Janet J., of Bethesda; a brother, Leo of Stoneham, Mass.; three sisters, Wanda Kozlowski of Dudley, Mass.; and Vera Campbell and Stephanie Farrell, both of Akron, Ohio, and one grandchild.