How do i contact the department of public works? Department of Public Works - Sign Shop 2425 Fenkell Ave. (east of Linwood) Detroit, MI (313) 628-2950 fax: (313) 342-4966What does the department of public works dpw do? The Department of Public Works (DPW) provides essential services such as roads, water, sanitation, drainage, solid waste, and facility construction. These services require the active support of all DPW employees.Is the dpw office in thomas closed on friday? DPW ST. THOMAS OFFICE CLOSED ON FRIDAY ST. THOMAS – The Department of Public Works is advising the community that its St. DPW ST.What does the new castle county department of public works do? The Department of Public Works provides a variety of services which touch the daily lives of all city residents and a substantial portion of New Castle County residents. Submit a non-emergency request for service (e.g. special pickups, water quality test) or log a complaint online.