What Clark Dietz, Inc. does

Clark Dietz, Inc. is an employee-owned civil and environmental engineering consulting firm headquartered in Champaign, Illinois, founded in 1953 and operating 13 offices across five Midwestern states (Illinois, Indiana, Kentucky, Michigan, and Wisconsin). The firm delivers planning, design, and construction management services across multiple disciplines, including civil/environmental engineering, transportation (highways, bridges, roundabouts, traffic), structural and bridge engineering, mechanical engineering, and electrical engineering with a differentiated arc flash hazard analysis practice. Core technology tools include MicroStation OpenRoads for 3D roadway design, SKM Power Tools for electrical system modeling, and hydraulic modeling combined with GIS mapping for wastewater and stormwater infrastructure analysis.

The firm's customer base is concentrated in the public sector, with primary clients including State Departments of Transportation (MDOT, IDOT, INDOT, WisDOT), municipal governments, sanitary and water utilities, and select private-sector developers. Notable project work spans the US-31 corridor rebuilding in Michigan, IDOT bridge reconstructions, the Evansville East Wastewater Treatment Plant expansion (22 MGD to 40 MGD), and roundabout programs in Carmel, Indiana.

Clark Dietz generates revenue through professional services fees on project-based contracts, typically obtained via competitive bidding on public infrastructure solicitations and direct relationship-based engagement with state DOTs and municipalities. The firm operates a sales-led, relationship-driven GTM motion across its regional offices, with a workforce of 110+ professional staff. Repeat industry recognition includes ENR Top 500 Design Firms (ranked #450 in 2026), the ASCE Outstanding Civil Engineering Achievement Award (2025), and ACEC National and state-level engineering excellence awards. The firm is privately held with no external institutional investors identified in the source data.

Name

Clark Dietz, Inc.

Legal name

Clark Dietz, Inc.

Website

https://clarkdietz.com

Company type

Private

Founded year

1953

Operating status

Operating

Headcount range

101–250 employees

Short description

Clark Dietz, Inc. is an employee-owned civil and environmental engineering consulting firm serving state DOTs, municipalities, and utilities across five Midwestern states, delivering transportation, water, structural, and electrical engineering services from 13 offices.

Ownership category

akta.pro rank

Product category

Civil Engineering Consulting Services

NAICS

Architectural, Engineering, and Related Services (5413), Environmental Consulting Services (541620)

SIC

Services-Engineering Services (8711)

akta.pro primary industry

Civil & Structural Engineering Consulting (BPAHAIAA)

akta.pro secondary industry

Water, Wastewater & Stormwater Compliance (BPAHAJAJ)

Keywords

• Civil engineering consulting
• Transportation engineering
• Water infrastructure design
• Construction management
• Environmental engineering services

Headquarters

HQ city

Champaign

HQ country

United States

HQ region

North America

Offices13 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Engineering Consulting Services: Professional engineering consulting services including design, analysis, and project management for civil, environmental, transportation, structural, and mechanical/electrical engineering projects. Revenue is generated through project-based fees for government and municipal clients.
2. Construction Management Services: Construction engineering services including inspection, materials testing, documentation, and survey activities for infrastructure projects. Billed as professional services on project contracts.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Clark Dietz is a Midwest-based employee-owned consulting engineering firm providing professional engineering services including consulting, design, and construction management across civil/environmental, transportation, structural, and mechanical/electrical engineering disciplines. Services span water and wastewater infrastructure, highways and bridges, municipal facilities, site/civil development, environmental compliance, arc flash hazard analysis, and public involvement for government and municipal clients across five Midwestern states.

Product overview

Clark Dietz, Inc. is a Midwest-based employee-owned consulting engineering firm that does not offer a packaged software product but rather delivers professional engineering services across multiple disciplines. The firm's portfolio of services includes civil/environmental engineering, transportation engineering (highways, local roads, bridges, roundabouts, traffic engineering), electrical engineering (including arc flash hazard analysis), mechanical engineering, structural engineering, and construction management. Core service areas span wastewater and water treatment, stormwater management, drinking water, renewable energy, site/civil design, environmental and cultural resources, municipal engineering, and public involvement. Services are delivered through regional offices in Illinois, Indiana, Kentucky, Michigan, and Wisconsin, and are organized around key infrastructure markets: Municipal, Power + Energy, Transportation, and Water.

Differentiator

Problem solved

Functional benefit

Products and services

• Wastewater Services Wastewater treatment and conveyance services including plant expansions, sewer system rehabilitation, nutrient removal upgrades, lift station design, force main installation, and biosolids management for municipal and utility clients across Illinois, Indiana, Wisconsin, Kentucky, and Michigan.
• Transportation Engineering Full-service transportation engineering covering highways and interstate corridors, local and county roads, structural and bridge projects, roundabout design, urban revitalization, and traffic engineering including capacity analysis, crash analysis, and signal design.
• Arc Flash Hazard Planning and Analysis Electrical safety analysis combining field data collection, short-circuit studies, coordination studies, and arc flash incident energy calculations using SKM Power Tools software, compliant with NFPA-70E and IEEE standards, for municipal, industrial, academic, and governmental facilities.
• Electrical Engineering Electrical engineering services for municipal, industrial, academic, and governmental facilities, including design, arc flash analysis, and electrical safety training.
• Structural and Bridge Engineering Structural engineering services including bridge design, rehabilitation of historic structures, bridge inspection, and seismic upgrades for transportation infrastructure projects.
• Municipal Engineering Municipal infrastructure engineering services including stormwater management, GIS-based infrastructure assessments, pavement asset management, and public works consulting for local governments.
• Site/Civil Engineering Site and civil engineering services including land development, grading, drainage, utility design, and infrastructure planning for municipal, commercial, and institutional projects.
• Environmental and Cultural Services Environmental consulting and cultural resource services including NEPA documentation, Section 106 historic preservation surveys, archaeological investigations, and regulatory compliance for infrastructure projects.
• Construction Engineering Construction engineering and inspection services including materials testing, documentation, maintenance of traffic design, and construction phase services for transportation and infrastructure projects.
• Water Services Comprehensive water infrastructure services covering drinking water treatment and distribution, stormwater management, and wastewater treatment, including certified operator services for municipal utility clients.
• Mechanical Engineering Mechanical engineering services for buildings and facilities including HVAC design, fire alarm systems, and mechanical systems for transit and municipal facilities such as the Pace Bus Garage.
• Public Involvement Community engagement and public involvement services including public meetings, stakeholder coordination, GIS story map development, and communication strategies for infrastructure projects.
• Renewable Energy Renewable energy engineering including green infrastructure, renewable energy integration at wastewater facilities, and energy efficiency improvements for municipal buildings and facilities.

Quantifiable outcome

• US-31 roundabout expected to reduce crashes by 55% and injury-related crashes by 78%
• +3 more outcomes

Named customers14 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration1 record

Feature3 records

Partnerships

Four partnerships are on record, tiered supporting.

• FishbecksupportingStrategic or Co-development PartnerSubconsultant on US-31 rebuilding project providing surveying expertise as part of the multidisciplinary design team led by Clark Dietz.
• Gourdie-FrasersupportingStrategic or Co-development PartnerSubconsultant on US-31 rebuilding project providing hydraulics expertise as part of the design team.
• SME (Subconsultant)supportingStrategic or Co-development PartnerSubconsultant on US-31 rebuilding project providing geotechnical and environmental design expertise.
• Prein&NewhofsupportingStrategic or Co-development PartnerLead consultant on Pere Marquette Rail Trail project with Clark Dietz serving as subconsultant for bridge rehabilitation and traffic services. Prein&Newhof led trail reconstruction work as part of the MDOT Transportation Enhancement project.

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• raSmith: raSmith is a Wisconsin-based engineering consulting firm offering civil, municipal, transportation, structural, and water resources services across the Midwest — closely matching Clark Dietz's regional footprint and service breadth.
• Foth Companies: Foth is a Wisconsin-headquartered engineering, environmental, and infrastructure consulting firm serving municipal, industrial, and government clients across the Midwest with comparable civil and environmental engineering capabilities.
• Ayres Associates: Ayres Associates is a Midwest-based (Wisconsin) engineering firm providing transportation, structural, water resources, and geospatial services to public and private clients — comparable in size, geography, and service mix.
• Crawford, Murphy & Tilly (CMT): CMT is an Illinois-based employee-owned engineering firm with a strong Midwest footprint serving airports, municipalities, water/wastewater, and transportation clients — directly comparable in ownership structure, geography, and services.
• Fehr Graham Engineering & Environmental: Fehr Graham is an Illinois/Iowa-based employee-owned engineering and environmental firm serving municipalities, counties, and private developers with comparable civil and environmental consulting services.
• Ruekert & Mielke: Ruekert & Mielke is a Wisconsin-based civil engineering firm specializing in municipal water, wastewater, stormwater, and site development — closely overlapping Clark Dietz's water and municipal service lines in the upper Midwest.
• MSA Professional Services: MSA is a Midwest-focused (Wisconsin-based) consulting engineering firm serving municipalities, counties, and state agencies with civil, transportation, water/wastewater, and structural services — overlapping Clark Dietz's customer base and disciplines.
• Short Elliott Hendrickson (SEH): SEH is a Midwest-based (Minnesota-headquartered) employee-owned engineering firm of comparable size, offering civil, transportation, water, and environmental services to municipal and state DOT clients — directly mirroring Clark Dietz's service mix, ownership structure, and go-to-market.
• HR Green: HR Green is a Midwest-based (Iowa/Cedar Rapids) multidisciplinary engineering firm providing transportation, water, municipal, and environmental services to cities, counties, and DOTs — closely comparable in scale, geography, and service portfolio.

Broad incumbents

• HDR Inc. HDR is a much larger Omaha-headquartered global engineering firm with deep Midwest roots, competing with Clark Dietz on state DOT and municipal water projects but operating at materially greater scale across many more service lines and geographies.

Market position

Strengths5 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/clark-dietz-inc-

Revenue estimate

Valuation estimate

Number of profiles

Profiles17 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Clark Dietz, Inc.