SMI's Civil Engineers provide design and development for municipal as well as residential clients. MUNICIPAL OR RURAL ROAD DESIGN Prepare plans to design location, slope, types and amounts of materials to be used, curb and gutter or ditch grades, cut or fill quantities all in accordance with local and state codes for submittal and approval. DRAINAGE PLANS Prepare plans to design the size and depths of storm sewers, swales or ditches to adequately allow the surface water of an existing site to drain without damage to the site, adjacent sites or the environment.