Carroll County Public Works Director Keith R. Kirschnick announced Friday that he will resign June 30.
Mr. Kirschnick, 42, said it was his decision to leave county government after seven years.
"From a personal and professional standpoint, I felt the time was right to pursue other career opportunities," he said.
Mr. Kirschnick was named director of the Department of Public Works 3 1/2 years ago when Jack Sterling retired. Mr. Kirschnick had been the department's assistant director. The department has not had an assistant director since Mr. Kirschnick was promoted.
He oversees about 210 employees and an annual budget of about $11.5 million. Department employees are responsible for roads, bridges, landfills and utilities.
L Mr. Kirschnick said Friday that he did not have another job.
"I'm going to take some time off and look into some other opportunities I've been thinking about for a while," he said.
He said he is considering starting his own business. He is a civil engineer and lives in the Sykesville area.
County Commissioner Donald I. Dell said Friday that he would be sorry to see Mr. Kirschnick leave.
"I really feel bad about it. Keith is an outstanding employee, a person I rely on an awful lot. I think we get straight answers from him.
"I wish him well," Mr. Dell said.
Mr. Kirschnick worked with citizen committees that studied whether the county should build a waste-to-energy incinerator and whether it should start a trash collection system.
Before working in Carroll County, Mr. Kirschnick worked for two years for Leesburg, Va. Before that, he worked for the Maryland Department of Transportation for 11 years.