Services We Offer

Mainelli Wagner & Associates, Inc. is a locally owned consulting engineering firm that was established in 2001 to provide the following professional engineering services to Nebraska communities, developers, and government agencies.

Roadway Development and Design Services

  • Corridor and Feasibility Studies
  • Street Design
  • Storm Sewer Design
  • Transportation Planning
  • Traffic Operation Studies
  • Railway Design
  • Commercial and Industrial Development
  • Right-of-Way Design
  • Public Involvement
  • Value Engineering
  • Utility Coordination
  • Rural and Urban Highway Design
  • Conceptual Layouts
  • Existing Road Upgrades
  • Drainage Studies
  • Silt Fence and Erosion Control Design
  • Intersection Design
  • Asphalt Overlays
  • New Concrete and Asphalt Roadways
  • Embankment Stabilization
  • Correction of Roadway Drainage Issues

Field Survey Services

  • GPS Surveys
  • Topographical Surveys
  • Construction Staking
  • As-built Surveys
  • Hydraulic Surveys
  • Wetland/Mitigation Surveys

Bridge and Culvert Design Services

  • Hydraulic Survey
  • Hydrology and Hydraulic Analysis
  • Concrete Slab Bridges
  • Steel Girder Bridges
  • Pre-stressed Concrete I-Beam Bridges
  • Pre-stressed Concrete Tee Beam Bridges
  • Pedestrian Bridges
  • Historical Bridges
  • Concrete Box Culverts
  • Culvert Pipes
  • Storm Sewer
  • Routine and Fracture Critical Inspections
  • Scour Assessments and Studies
  • Disaster Prevention and Post-disaster Restoration
    • Bank Reconstruction and Stabilization
    • Spur-dike Fields
    • Scour Prevention

Construction Administration/Observation Services

  • Bridge, Roadway, and Utility Staking
  • Grading Inspection
  • Concrete Plant and Field Inspection
  • Asphalt Laydown
  • Bridge Construction
  • Concrete Box Culvert Construction
  • Culvert Pipe Installation
  • Storm Water Pollution Prevention Plan Monitoring
  • Utility Installation
  • Compensatory Mitigation Construction

Environmental Services

  • Storm Water Pollution Prevention Plans (SWPPP)
  • Threatened and Endangered Species Surveys
  • Endangered Species Act Compliance
  • Clean Water Act (Section 404) Permit Application Packages
  • Clean Water Act Compliance
  • National Environmental Policy Act (NEPA) Compliance
    • Environmental Impact Statements
    • Environmental Assessments
    • Categorical Exclusions
  • Hazardous Material Reviews
  • Wetland Determinations and Delineations (Performed by Qualified Scientist Recognized by U.S. Army Corp of Engineers)
  • Wetland and Stream Compensatory Mitigation Planning and Monitoring
  • 4(f) Determinations and Documents
  • Green Sheet Preparation
  • National Pollutant Discharge Elimination System (NPDES) Permit Packages
  • Section 106 National Historic Preservation Act Compliance

Geotechnical Engineering

  • Investigation and Design
    • Slope Stability Studies
    • Foundations
    • Commercial, Industrial, and Residential Developments
    • Utility Infrastructure
    • Road and Rail Embankments
    • Pavement Design
    • Bridge Foundations
    • Elevated and At-Grade Towers and Tanks
    • Lagoon Investigations
    • Industrial Facilities
    • Dams
    • MSE Retaining Wall Design
    • Geotechnical Forensic Studies
    • Instrumentation Design and Installation
  • Field Testing
    • Percolation Testing
    • Nuclear Gage Density Testing
  • Materials Laboratory Testing (Nebraska Dept. of Roads Certified Laboratory)
    • Concrete Testing
      • Concrete Cylinder Breaks
      • Mortar Cube Breaks
      • Grout Prism Breaks
    • Asphalt Testing
      • Marshal
      • Theoretical Mass Specific Gravity (MSG) Rice Method
      • Gradation
  • Soil Services
    • Soil Classification
    • Grain Size Analysis (Sieve and Hydrometer)
    • Atterberg Limits
    • Unconfined Compression
    • Standard/Modified Proctor
    • Dispersion
    • Corrosivity/Organic Content