Our Services

Civil Engineering

Civil/Land Development Division Services​

Since 1997, O’Bunco Engineering has been providing comprehensive site engineering services to our clients. OEI has experience with sustainable site solutions and a core value of incorporating green design in our site engineering. Sustainability is important, so is value engineering, therefore, we are always looking for ways to cut construction costs while, providing the greatest value to our clients. We bring cohesive solutions to each project by caring about the details while maintaining sight of the big picture. Through our occupational experience we have learned that communication is the key to a successful project and that taking the time to do so effectively can save time and money. Our many years in the business have taught us that keeping the project on schedule affects the bottom line which is why we are dedicated to meeting established deadlines. We are equipped to lead your project from concept development through planning, design, and Construction. OEI has been helping developers and public schools flourish for more than 20 years.

  • Subdivision
  • Residential & Commercial Development
  • Site Analysis
  • Storm water management plans & Report
  • NPDES Permit Application
  • Erosion & Sediment Control Plans
  • Pavement Management Plans
  • Boundary & Topographic Surveying
  • Utility Design
  • Grading Plans
  • Evaluating Design Alternatives

Our Civil/Land Development Engineering Design Project Experience:

• Excel Facility Commercial & Office Building Project; Milton WA
• Wayne Green Single-Family Residence Civil Site Design & Topographic Surveying
• Montano Single Family Residence Civil Site Design & Topographic Surveying
• Child Development Center Design Build Project, Dept. of US Army Ft. Lewis WA (Sub to Atlantic Marine Construction (AMC) General & SAI)
• A-1 Landscaping Main Office/SR9 Site Development Project
• Warehouse & Office/Central Welding Commercial Building Project; Woodinville WA
• Lyon Creek Enhancement Flood Restoration Project; Lake Forest Park WA
• Russell’s Landing Renovation @ America Lake Design Build Project, Dept. of US Army Ft. Lewis WA (Sub to Atlantic Marine Construction (AMC) General & SAI)

Municipal Engineering Services

O’Bunco Engineering’s qualified and experienced Civil Engineering and Land Development professionals have proven skill in coordination and design of Civil Engineering projects. Our technical expertise enables projects to progress smoothly and efficiently, while meeting objectives to save on project time, costs and eliminate potential problems before they occur. Below is an overview of comprehensive expertise in area of civil engineering.

  • Roadway, Highway/Interchange Design
  • Roadway Widening & Realignment
  • Pavement/Overlay Design and Evaluation
  • Non-Motorized Facility Design
  • Sidewalks/Trails
  • Bike Lanes and Pedestrian Facilities
  • Land Development/Grading Plans
  • Evaluating Design Alternatives
  • Storm Drainage/Water Quality Facilities
  • Site Hydrology/Hydraulics
  • Detention/Diversion Design
  • Conveyance/Water Harvesting Design
  • Surface Water/Watershed Management
  • System Rehabilitation/Replacement
  • Gravity Sewers; Inflow/Infiltration Analysis

Our Civil/Transportation Engineering Design Project Experience:

  • I-90 East gate HOV (for WSDOT/Sound Transit)
  • I-405/SR 167 Stage1 Widening & Hot Lane Design Build (for WSDOT)
  • I-405/Renton HOV (Sound Transit)
  • NE 8/Renton HOV Direct Access Project for Sound Transit (sub to CH2MHILL) – OEI provided utility mapping and drainage design
  • Port of Tacoma/APM Terminal Storm Sewer System Design
  • Lake Steve High School sanitary sewer capacity analysis for School Potable Addition, WA
  • Utility mapping and Drainage design for Sound Transit, Renton, WA
  • Culvert Design SE Wax Road, City of Maple Valley
  • Sidewalk & Bike Lane Project, City of Maple Valley, WA
  • Burke-Gilman to Magnuson Spur Connection Trail Project-SDOT
  • SE Wax Rd Reconstruction, Sidewalk & Bike Lane, City of Maple Valley, WA
  • 3rd Ave NW Sidewalk/NW 86th Street Projects, City of Seattle, WA
  • Bradford Tail/43rd Ave South Projects, City of Seattle, WA
  • Stormwater Comprehensive Plan City of Woodinville
  • 65th Street Sidewalk Improvement, Clark County WA
  • Sidewalk & ADA Restoration Design/ Leschi Neighborhood, Seattle City Light, WA
  • Lake Stevens High School Parking Field Pavement Overlay, Lake Stevens, WA
  • 16th Street NE Pedestrian Safety Improvement, City of Lake Stevens
  • Downtown Comprehensive Drainage Feasibility Study/Location of Regional Detention Pond, City of Woodinville, WA
  • Mt Pilchuck Elementary Provided Design & Construction Documents
  • Hill Crest Elementary Provided Design & Construction Documents
  • Preliminary Design Report NE 91st Street from 7th Ave extension to Hazel Dell Ave, Clark County, WA