Sanbell

Intelligent Infrastructure. Enduring Communities.

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About the firm

Sanbell is an award-winning, multi-disciplinary planning, design, and engineering practice with over 300 professionals across 14 offices in the Western United States. Formed in 2023 from the merger of Sanderson Stewart, Bellecci & Associates, and Summit Engineering, and later expanding with Coleman Engineering and Core Design, Sanbell partners with public and private clients to deliver civil infrastructure, water and wastewater systems, transportation networks, land development, mining civil support, landscape architecture, and community planning. The practice serves communities across California, Colorado, Montana, Nevada, Texas, and Washington, and is ranked No. 378 on ENR's 2026 Top 500 Design Firms.

Established
1969
Team
Large
Firm type
Civil Engineering · Transportation Engineering · Land Surveying · Landscape Architecture · Water / Wastewater Engineering · Mining Engineering

People

Michael SandersonCEO

Glenn SpragueManaging Principal, Sanbell Northwest

Capabilities

Civil Engineering

Service website

Comprehensive civil infrastructure engineering solutions for municipal and site development projects across the Western United States.

  • Site Development

    Detailed engineering and layout design for complex municipal and private sites.

  • Grading and Drainage

    Earthwork calculations and stormwater management planning to secure site stability and proper runoff control.

  • Utilities Design

    Engineering of wet and dry utility networks to support community infrastructure.

  • Municipal Infrastructure Design

    Public agency support for localized utility, roadway, and city-wide utility planning.

Transportation Engineering

Service website

Multimodal transit and roadway engineering to optimize safety, connectivity, and capacity.

  • Roadway Design

    Geometrics, paving, and alignment design for municipal streets and regional highways.

  • Traffic Analysis

    Systematic capacity assessments and traffic impact studies to guide planning choices.

  • Complete Streets

    Designing integrated roadways that balance transit, auto, pedestrian, and cycling requirements.

  • Pedestrian and Bicycle Facilities

    Planning and engineering dedicated pathways, sidewalks, and lanes for active mobility.

  • Traffic Engineering Studies

    Safety assessments, speed limit investigations, and traffic pattern analyses for public agencies.

Traffic Engineering

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System analysis and signal design to enhance safety and efficiency on regional transport corridors.

  • Traffic Signal Design

    Engineering electrical and phasing plans for intersections and warning systems.

  • Safety Analysis

    Crash data review and countermeasure planning to reduce traffic risks.

  • Transportation Planning

    Long-range corridor studies and network planning to support regional growth.

Land Development

Service website

Comprehensive consulting and engineering services that guide land projects from initial concept through to final construction.

  • Entitlements

    Navigating local regulatory approvals, permitting processes, and land use clearances.

  • Master Planning

    Creating long-term growth and layout frameworks for large-scale real estate parcels.

  • Site Design

    Developing structural site layouts, parking plans, and utility footprints.

  • Development Engineering

    Technical design and civil engineering integration specifically for private sector land projects.

Land Surveying & Mapping

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Professional boundary determination, mapping, and geospatial services to establish exact spatial frameworks.

  • Boundary Surveys

    Legal determination and mapping of property lines and easements.

  • Topographic Mapping

    Detailed elevation and terrain mapping to support design and engineering activities.

  • Construction Staking

    Translating design blueprints into exact physical marks on construction sites.

  • ALTA/NSPS Surveys

    Providing standardized, highly detailed surveys to satisfy strict commercial real estate and title insurance requirements.

  • Drone Surveying

    Utilizing aerial unmanned vehicles to capture rapid, high-resolution topographic data.

  • GIS Services

    Creating and managing geographic information systems to organize spatial assets.

Community Planning

Service website

Creating zoning and land use strategies that support sustainable, vibrant neighborhood development.

  • Zoning Consulting

    Aligning proposed developments with municipal ordinances and helping secure variances.

  • Land Use Planning

    Developing regional policies and allocation frameworks for agricultural, residential, and commercial growth.

  • Public Engagement Services

    Facilitating community workshops and public hearings to build local consensus.

Landscape Architecture

Service website

Aesthetic and ecological site planning for parks, streetscapes, public spaces, and private developments.

  • Placemaking

    Designing memorable, engaging public spaces that foster community interaction.

  • Parks and Open Space Design

    Planning recreational trail networks, public parks, and preserved natural corridors.

  • Streetscape Design

    Integrating urban landscaping, street furniture, and pedestrian pathways into transport corridors.

Water & Wastewater Engineering

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Engineering durable utility networks, treatment systems, and distribution lines to manage vital water resources.

  • Utility Distribution Design

    Engineering layout, pressure systems, and piping networks for clean water supply.

  • Treatment Facility Engineering

    Designing biological and mechanical processes for clean water and wastewater treatment plants.

  • Collection Systems

    Sizing and routing gravity sewers and force mains to safely convey wastewater.

Construction Management & Inspection

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Providing on-site oversight, administrative control, and quality verification for infrastructure projects.

  • Construction Inspection

    Verifying that on-site installations comply exactly with engineering designs and safety standards.

  • Project Administration

    Managing schedules, processing change orders, and coordinating communications between owners and contractors.

Mining Civil Support

Service website

Civil and geotechnical engineering to support mining operations and natural resource extraction.

  • Mine Site Development

    Designing layouts, grading plans, and sediment basins for active extraction zones.

  • Haul Road Design

    Engineering heavy-vehicle transport routes to ensure safe and efficient mine logistics.

  • Geotechnical Investigations

    Assessing soil and rock stability to prevent slope failures and secure foundations.

Industries

Land Development · Infrastructure · Transportation · Highways & Roads · Water Supply · Wastewater · Mining · Natural Resources · Government · Residential · Commercial

Projects

No projects listed yet.