Howard W. Miller Jr., a civil engineer for Harford County, died Saturday at his home in Pylesville after a long illness. He was 60.

Services for Mr. Miller are to be held at 2 p.m. tomorrow at the Little Britain Presbyterian Church in Peach Bottom, Pa.

Mr. Miller went to work for the Public Works Department in Harford County after retiring in 1986 from the Army Corps of Engineers in the Baltimore office.

He is survived by his wife, the former Ione Groff; two daughters, Christine Frost of Lampeter, Pa., and Amelia Miller of Pylesville; two sons, Gregory Miller of Dallastown, Pa., and Kent Miller of Pylesville; and six grandchildren.