Sullivan, Donahoe & Ingalls is a small, personalized, local firm providing survey, land design, and civil engineering services. At SDI, one of our managing partners is assigned to each project and serves as the direct contact person for our clients. This direct involvement illustrates our top level management commitment to each project.

Our company possesses extensive experience in the civil engineering and land surveying profession having been in business since 1965. We enjoy an excellent business reputation in our community both from the standpoint of quality workmanship and professionalism, as well as demonstrating sound fiscal responsibility.

Our professional expertise encompasses sanitary sewer mains, pump stations and force mains, water main and storm sewer designs, roadway and drainage design, Chesapeake Bay and stormwater management plans, LID (low-impact development) and Integrated Management Practice design, site development and grading plans, erosion and sediment control plans, and land and topographical surveys.

SDI prides itself on seeing its projects through from the planning stage to final design and construction.

Click here for more information about the managing partners of SDI.