Spalding DeDecker is celebrating its 65th year in business. Established in 1954, Spalding DeDecker is an employee-owned consu ... lting engineering firm specializing in infrastructure, land development, and surveying. With offices in Detroit, Grand Rapids, and Rochester Hills, and field offices in Novi and Livonia, Michigan, Spalding DeDecker offers a diverse core of engineering services for municipal, land development, transportation, water/wastewater projects, construction engineering, pavement management, and land surveying. Some of our niche services include industrial surveying, oil & gas pipeline surveying, aeronautical / aviation / airfield surveying, pavement management programs, roof, and building envelope assessments, construction percent complete verification for construction draws, grant funding applications, floodplain analysis, floodplain mapping correction, and hydraulic/hydrologic computer modeling. read more