Greenman-Pedersen, Inc.

Innovative, Sustainable Engineering Solutions

Website

About the firm

Greenman-Pedersen, Inc. (GPI) is a multi-discipline engineering and construction services provider with over 1,800 employees across more than 60 offices nationwide. GPI delivers infrastructure design, inspection, and consulting spanning bridges, highways, building systems (MEP/S), civil/site, environmental, water, marine, geospatial, and intelligent transportation systems. Ranked #83 in ENR's Top 500 Design Firms and #72 among Top 100 MEP Giants, it is recognized as a leader in bridge preservation and building systems engineering for public and private sector clients.

Established
1966
Team
Large
Firm type
Civil Engineering · Structural Engineering · Environmental Engineering · Transportation Engineering · MEP · Land Surveying · Design-Build

Capabilities

Bridge design, inspection, preservation, rehabilitation, and structural condition assessment for structures ranging from simple culverts to long-span and complex truss systems. Over nearly 60 years, the practice has established itself as a national leader in bridge preservation and emergency response.

  • Bridge Design
  • Bridge Inspection
  • Bridge Preservation & Rehabilitation
  • Structural Condition Assessment
  • Material Testing
  • Bridge Monitoring
  • NHI Training

Building Systems (MEP/S)

Service website

Mechanical, electrical, plumbing, fire protection, and structural engineering for new construction, renovations, and infrastructure upgrades. Services span commercial, corporate, education, healthcare, and community facilities, focusing on redundancy, resiliency, and reliability.

  • Mechanical
  • Electrical
  • Plumbing
  • Fire Protection
  • Structural
  • Energy Audits / Energy Modeling
  • Commissioning
  • Sustainable Design / LEED / WELL
  • Building Evaluations
  • Facilities/Asset Management

Civil / Site Engineering

Service website

Comprehensive civil engineering, land planning, and surveying services for public and private sector projects. The team integrates sustainable design strategies into site development, feasibility analyses, permitting, and municipal engineering.

  • Land Development
  • Stormwater Management
  • Land Surveying
  • Municipal Engineering
  • Dam Safety
  • Local, State, & Federal Permitting
  • Resilience Planning & Design
  • Sanitary Sewer Design
  • Septic Design

Highway planning, roadway design, and corridor studies for interstates, state routes, and local roadways. Services support public transportation agencies in enhancing roadway infrastructure and traffic flow.

  • Roadway Design
  • Interchange Design
  • Corridor Studies

Construction Inspection

Service website

Quality control, project oversight, and resident engineering inspection for transportation infrastructure including roadways, bridges, and major interchanges. With over 500 inspectors nationwide, the practice safeguards public and private investments.

  • Field Inspection Services
  • Material Sampling, Testing & Acceptance
  • As-Built Documentation
  • Constructibility & Plan Reviews
  • Safety Monitoring & Management

Alternative Project Delivery

Service website

Design-build, progressive design-build, public-private partnerships, integrated project delivery, and construction management-at-risk. The collaborative approach overcomes conventional timeline and budget constraints for critical infrastructure.

  • Design-Build
  • Public-Private Partnerships
  • Integrated Project Delivery
  • Construction Management-at-Risk

Environmental

Service website

Planning, assessment, and compliance support for transportation and land-development programs.

  • Planning & Environmental Management
  • Environmental Compliance

Municipal supply, sewer, and stormwater infrastructure design for public works programs.

  • Water System Supply & Distribution

    Planning and design support for municipal water supply and distribution systems.

  • Sanitary Sewer Design

    Sewer infrastructure design for municipal and site-development programs.

  • Stormwater Management

    Stormwater planning and design for drainage and flood mitigation.

Waterfront infrastructure engineering for public and private coastal projects.

  • Marine Structural Design

    Structural design support for waterfront and coastal infrastructure.

  • Waterfront Planning

    Planning support for marine and shoreline improvement programs.

Intelligent Transportation Systems

Service website

Technology systems engineering for roadway operations and traffic management programs.

  • Traffic Management Systems

    Advanced systems that support active management of roadway operations.

  • Signal Systems

    Signal-system design and integration for coordinated traffic movement.

  • Communications Networks

    Communications infrastructure that supports intelligent transportation deployments.

Geospatial

Service website

Mapping and model-based data services for engineering planning and construction programs.

  • Mapping

    Mapping services for infrastructure planning and project documentation.

  • Land Surveying

    Survey support for design and construction programs.

  • 3-D Modeling

    Model-based geospatial deliverables for engineering coordination.

Traffic & Safety

Service website

Traffic engineering and roadway safety support for transportation operations.

  • Traffic Analysis

    Analysis of roadway operations to guide transportation improvements.

  • Safety Monitoring

    Monitoring support for construction and operating roadway environments.

  • Operations Communication

    Communication strategies that support traffic and safety programs.

Corrosion Protection

Service website

Corrosion prevention and mitigation services, including coatings testing, inspection, and design for long-term preservation of structural assets.

  • Coatings Testing & Design

Industries

Bridges · Highways & Roads · Government · Federal · Education · Healthcare · Commercial · Mixed-Use · Infrastructure · Water Resources · Marine · Stormwater & Flood Control · Land Development

Projects

Corridor H Parsons - Davis Segment

Northeastern, WV · Highways & Roads

Project details

Management and design of the corridor segment, including comprehensive coordination with the client, regulatory agencies, and subconsultants.

Northampton County Bridge Renewal Program (P3)

Northampton County, PA · Bridges

Project details

Oversight of all aspects of design from concept development through construction engineering, including demolition, erection, and construction under a public-private partnership.