What Klingner & Associates, PC does

Klingner & Associates, PC is a multidisciplinary engineering, architecture, and surveying firm headquartered in Quincy, Illinois, serving public and private sector clients across Illinois, Iowa, and Missouri. Founded in 1905 as the W.P. Bushnell Engineering Firm and rebranded under the Klingner name after William H. Klingner joined in 1936, the firm has operated continuously for 120+ years and is led today by Michael D. Klingner, PE, as President, representing the founding family's ongoing involvement. The firm operates through four integrated service areas: Architecture (architectural design, interior design, landscape architecture, FF&E, master planning); Engineering (MEP, site development, structural, transportation); Water (water resources, drinking water, wastewater); and Field Services (environmental, geotechnical, construction materials testing, construction observation, special inspections, surveying).

Revenue is generated through project-based professional service fees under direct client engagements and formal government RFQ/RFP processes with IDOT, MoDOT, IaDOT, USACE, and municipal clients. The firm holds extensive regulatory prequalifications across these agencies, including Section 408 permitting expertise (50+ applications), USACE-validated CMT labs, and an in-house geotechnical drilling fleet of five rigs. Service delivery is supported by nine regional offices, dedicated CMT laboratories in Hannibal, MO and Burlington, IA, and ROV-based submarine inspection capabilities for culvert and pipe work. GTM motion is enterprise field sales: clients engage through "Talk to an Expert" contact forms, direct outreach, and prequalification-driven competitive bidding.

The firm has grown primarily through tuck-in acquisitions and greenfield office openings (Schrader & Associates 2015, Pella 2015, Columbia 2016, Verbeke-Meyer 2020, Carbondale 2022, Koehler Engineering 2025), retaining acquired brand identities (Geotechnics, Klingner Architectural Group) within an integrated practice. The business is a privately held professional corporation with no external parent, venture capital, or private equity ownership indicated. Quantitative track record includes 400+ roadway/bridge projects in 15 years, 300+ geotechnical drilling projects in 3 years, 1,000,000+ linear feet of water mains designed, 100+ elevated storage tanks, and 800+ communities served for environmental services.

Name

Klingner & Associates, PC

Legal name

Klingner & Associates, P.C.

Website

https://klingner.com

Company type

Private

Founded year

1905

Operating status

Operating

Headcount range

101–250 employees

Short description

Klingner & Associates, PC is a privately held Midwest engineering, architecture, and surveying firm with nine regional offices across Illinois, Iowa, and Missouri, serving municipal, education, federal, water utility, and industrial clients via project-based professional services.

Ownership category

akta.pro rank

Product category

Engineering Services

NAICS

Engineering Services (541330), Architectural, Engineering, and Related Services (5413), Environmental Consulting Services (54162)

SIC

Services-Engineering Services (8711)

akta.pro primary industry

Civil & Structural Engineering Consulting (BPAHAIAA)

akta.pro secondary industry

Water, Wastewater & Hydraulics Engineering Consulting (BPAHAIAD)

Keywords

• Civil engineering services
• Architectural design services
• Water resources engineering
• Geotechnical engineering
• Transportation engineering

Headquarters

HQ city

Quincy

HQ country

United States

HQ region

North America

Offices9 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Professional Engineering and Architecture Services: Project-based fees for comprehensive engineering, architecture, water, and field services. Projects range from small municipal infrastructure to large-scale water treatment facilities and transportation projects. Revenue generated through direct client engagements with government agencies, municipalities, educational institutions, and commercial/industrial clients.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels8 records

Core offering

Klingner & Associates, P.C. is a multidisciplinary engineering, architecture, and surveying firm delivering integrated design and consulting services across architecture, civil/structural/MEP/transportation engineering, water resources and treatment, and field services (geotechnical, environmental, surveying, construction materials testing). The firm serves government agencies, municipalities, educational institutions, and commercial/industrial clients across Illinois, Iowa, and Missouri through nine regional offices. Services are scoped per project, ranging from small municipal infrastructure to large-scale water treatment, transportation, and building projects.

Product overview

Klingner & Associates, PC is a multidisciplinary engineering, architecture, and surveying firm offering integrated professional services through four primary service areas: Architecture (encompassing architectural design, interior design, landscape architecture, furniture/fixtures/equipment selection, and master planning), Engineering (including mechanical/electrical/plumbing, site development, structural, and transportation engineering), Water (covering water resources, drinking water, and wastewater engineering), and Field Services (comprising environmental, geotechnical, construction materials testing, construction observation, special inspections, and surveying). The firm operates as a unified practice where multidisciplinary teams collaborate on projects, enabling integrated design and engineering solutions under one roof.

Differentiator

Problem solved

Functional benefit

Products and services

• Architecture Services Comprehensive architectural design services including new construction, renovation, and repair for various building types, encompassing architectural design, interior design, landscape architecture, FF&E selection, and master planning for government, education, commercial, and nonprofit clients.
• Architectural Design Full-service architectural design including concept design, programming, schematic design, design development, construction documents, facility assessments, master planning, feasibility studies, and forensic analysis.
• Master Planning Comprehensive master planning services for urban and rural communities, including riverfronts, streetscapes, college campuses, and corporate facilities, encompassing feasibility studies, public engagement, and implementation strategies.
• Engineering Services Integrated engineering services including mechanical/electrical/plumbing (MEP), site development, structural engineering, and transportation engineering for government, commercial, and industrial clients.
• Mechanical, Electrical, and Plumbing (MEP) Engineering Comprehensive MEP engineering including HVAC, indoor air quality, energy recovery, central heating/chiller plants, geothermal, lighting design, power distribution, emergency generators, plumbing systems, and specialized industrial systems.
• Site Development Engineering Site development engineering including public/private site layout, residential/commercial subdivision, parking lot design, industrial site design, stormwater management, recreational facilities, and ancillary services.
• Structural Engineering Structural engineering services for buildings and infrastructure including structural design, foundation systems, historic rehabilitation, industrial equipment support, storm shelters, bridges, pump stations, retaining walls, and forensic engineering.
• Transportation Engineering Transportation engineering including freeways, highways, streets, intersections, ADA sidewalks, signalized/roundabout design, right-of-way surveys, hydraulic surveys, geotechnical investigations, NBIS bridge inspections, and traffic studies.
• Water Engineering Solutions Specialized water engineering services including water resources planning, drinking water treatment/distribution, and wastewater collection/treatment for municipalities, levee/drainage districts, and private companies.
• Water Resources Engineering Water resources engineering including docks, ports, marinas, dams, spillways, flood-control systems, levee design/restoration, pump station design, stream bank stabilization, FEMA certifications, wetland delineation, and Section 404/408 permitting.
• Drinking Water Engineering Drinking water engineering including water main design/inspection, water tank design/inspection (including ROV inspections), water treatment facility design, pump station design, preliminary engineering reports, and grant funding assistance.
• Wastewater Engineering Wastewater engineering including treatment facility design, collection/treatment system design, lift station design/rehabilitation, sewer system design/inspection, industrial waste treatment, and NPDES permitting.
• Field Engineering Services Comprehensive field services including environmental, geotechnical, construction materials testing, construction observation, special inspections, and surveying to support design and construction projects.
• Environmental Engineering Environmental engineering including asbestos inspection/sampling, stormwater pollution prevention, SPCC plans, Phase I/II environmental site assessments, wetland delineation/mitigation, brownfields consultation, and regulatory permitting, serving 800+ communities and organizations.
• Geotechnical Engineering (Geotechnics) Geotechnical engineering through the Geotechnics division including subsurface exploration, test borings, soil/rock mechanics analysis, foundation recommendations, and over-water/barge drilling, supported by an in-house fleet of five drill rigs.
• Construction Materials Testing Construction materials testing including soil, concrete, masonry, asphalt, and rock testing via full-service labs in Hannibal, MO and Burlington, IA, validated by US Army Corps of Engineers.
• Construction Observation Construction observation services including resident engineer, inspector, and resident project representative roles to monitor construction conformance with contract requirements.
• Special Inspections Special inspections for structural elements and building components as required by building codes and regulations.
• Surveying Surveying services including topographic surveys, boundary surveys, right-of-way surveys, construction staking, hydrographic surveys, and utility locations for various project types.

Quantifiable outcome

• Over 400 roadway, freeway, street, and bridge projects designed or rehabilitated in 15 years
• +6 more outcomes

Named customers11 records

Segments10 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Scale indicators10 records

Recent moves9 records

Expansion highlights6 records

Broad incumbents

• HDR Inc. Large global engineering, architecture, and consulting firm with deep roots in the Midwest and dominant practice areas in water, transportation, and government infrastructure. Overlaps with Klingner in water resources, transportation, and federal/municipal work but operates at materially larger scale.
• Burns & McDonnell: Employee-owned engineering, architecture, and construction firm headquartered in Kansas City with strong Midwest presence across water, environmental, transportation, and federal client work. Comparable in service breadth but significantly larger in scale and geographic reach.
• Woolpert: National architecture, engineering, and geospatial firm with strong Midwest presence across water, transportation, environmental, and federal markets. Comparable service breadth but operates at substantially larger scale than Klingner.

Direct peers

• MSA Professional Services: Midwest-headquartered multidisciplinary engineering, architecture, and planning firm of comparable size serving municipalities, counties, and DOTs across the upper Midwest. Highly comparable in service mix, client base, and regional scale.
• Crawford, Murphy & Tilly (CMT): Illinois-based engineering consulting firm with strong municipal, transportation, water, and aviation practices across the Midwest. Direct overlap with Klingner's Illinois DOT work, water resources, and municipal infrastructure portfolio.
• Mead & Hunt: Midwest-originated architecture and engineering firm providing planning, design, and consulting across transportation, water, aviation, and government markets. Comparable in multidisciplinary structure and Midwest public-sector client base.
• SEH (Short Elliott Hendrickson): Upper Midwest employee-owned engineering, architecture, and planning firm with municipal, transportation, water, and environmental practices. Highly comparable size, ownership structure, and Midwest DOT/municipal client overlap.
• KLJ Engineering: Midwest-based (with presence in the Dakotas and surrounding states) engineering, planning, and surveying firm serving public infrastructure clients. Comparable in scale, public-sector mix, and core transportation/water/wastewater services.
• Ayres Associates: Midwest-based engineering, architecture, and geospatial services firm of comparable size serving DOTs, municipalities, and water utilities. Directly comparable on transportation, water resources, structural, and surveying service offerings.

Regional players

• Foth Companies: Wisconsin-headquartered engineering, science, and construction services firm with infrastructure, water, and environmental practices serving Midwest municipal and industrial clients. Comparable service mix with a slightly different geographic anchor.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/klingnertweets
• YouTubeyoutube.com/user/KLINGNERASSOCIATES
• Facebookfacebook.com/klingnerassociatespc
• LinkedInlinkedin.com/company/klingner-&-associates-pc?trk=top_nav_home

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries7 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 Klingner & Associates, PC