What Lochner does

Lochner (legal entity H.W. Lochner, Inc.) is a U.S. infrastructure engineering services firm founded in 1944 in Chicago by transportation planning pioneer Harry W. Lochner. The company delivers planning, environmental, design, construction engineering and inspection, and program/construction management services to aviation, surface transportation, transit and rail, water/wastewater, and municipal/public works clients. Core service areas span eight disciplines — Alternative Delivery, Construction Engineering & Inspection, Engineering & Design, Environmental, Planning, Program & Construction Management, Public Works, and Technology — with technology-enabled solutions including asset management programs, intelligent transportation systems (ITS), drone-based inspection (LiDAR, thermal, high-resolution imagery), and digital twin capabilities delivered through a partnership with Praedico. Customer engagement is exclusively with public-sector clients (state DOTs, transit authorities, airports, ports, and municipalities), won through competitive bidding and qualifications-based procurement, with multi-year on-call and frame agreement contracts.

The firm operates a multi-brand platform structured as a "Family of Companies" following an aggressive acquisition campaign beginning in 2022. Acquired brands include KOA Corporation (Southern California transportation), Armstrong Consultants (airport planning across 130+ western U.S. airports), K Friese + Associates (Texas civil engineering), Triunity (program management and specialized communications/electrical engineering), and Green International Affiliates (New England surface transportation and water resources). In August 2025, Lochner merged with France-based Egis Group, becoming the cornerstone of Egis' U.S. expansion and operating as a combined firm of 1,400+ professionals across 54 offices. The company's revenue model is professional services fee-based, with project pricing determined by scope, complexity, and contract terms and no publicly disclosed revenue figures. Leadership is led by CEO Terry Ruhl, who recapitalized the firm in 2021 and drove the acquisition-led growth strategy.

Name

Lochner

Legal name

H.W. Lochner, Inc.

Website

https://hwlochner.com

Company type

Private

Founded year

1944

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

Lochner is a U.S. infrastructure engineering services firm delivering planning, design, environmental, construction engineering/inspection, and program management to government aviation, surface transportation, transit/rail, and water clients. The firm operates 54 offices post-merger with Egis Group.

Ownership category

akta.pro rank

Product category

Infrastructure Engineering Services

NAICS

Architectural, Engineering, and Related Services (5413)

akta.pro primary industry

Water, Wastewater & Hydraulics Engineering Consulting (BPAHAIAD)

Keywords

• Infrastructure engineering services
• Transportation planning design
• Construction engineering inspection
• Aviation airport engineering
• Water wastewater engineering

Headquarters

HQ city

Chicago

HQ country

United States

HQ region

North America

Offices48 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Professional Engineering Services: Fee-based professional services for infrastructure planning, design, construction engineering and inspection, and program and construction management. Projects are typically awarded through competitive bidding processes with government agencies.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels7 records

Core offering

Lochner is a professional infrastructure engineering services firm delivering planning, environmental, design, construction engineering and inspection, and program and construction management for aviation, surface transportation, transit and rail, bridges and structures, and water/wastewater clients nationwide. The firm serves government agencies through competitive bidding and on-call agreements, with technology-enabled capabilities in asset management, intelligent transportation systems, drones, and digital twins. Its work is delivered by 1,200+ professionals across 50+ U.S. offices, supported by an integrated family of specialist acquired firms.

Product overview

Lochner is a comprehensive infrastructure services firm offering aviation, surface transportation (highways, roads, bridges), transit and rail, and water and wastewater engineering services across the United States. The company operates as a unified platform of service offerings including Alternative Delivery, Construction Engineering & Inspection, Engineering & Design, Environmental, Planning, Program & Construction Management, Public Works, and Technology services. Lochner's family of companies includes KOA Corporation (transportation engineering and mobility planning), Armstrong Consultants (airport planning), K Friese + Associates (civil engineering), Triunity (program management), and Green International Affiliates (structural engineering), all integrated under the Lochner brand following strategic acquisitions since 2022. The company merged with Egis Group in August 2025, positioning Lochner as the cornerstone of Egis' U.S. growth strategy.

Differentiator

Problem solved

Functional benefit

Brands

• KOA Corporation, a Lochner Company: Transportation engineering, mobility planning, and construction management subsidiary for public agencies and private sector clients
• Armstrong Consultants, a Lochner Company
• K Friese + Associates, a Lochner Company
• Triunity, a Lochner Company
• Green International Affiliates, a Lochner Company

Products and services

• Aviation Services Airport planning, environmental, engineering, design, and construction administration services covering airside and landside infrastructure upgrades, capacity increases, and safety improvements for commercial and general aviation airports.
• Bridges & Structures Services Bridge and structure inspection, design, and rehabilitation services spanning steel girder bridges, moveable and complex bridges, pedestrian bridges, highway overpasses, culverts, and major river crossings for transportation infrastructure clients.
• Highways & Roads Services Surface transportation planning, design, and delivery services for complete streets, highways, complex interchanges, and toll roads supporting safe and efficient movement of people and goods for state DOTs and transportation agencies.
• Transit & Rail Services Transit and rail infrastructure services including light rail, commuter rail, bus rapid transit, railroad coordination, track design, program management, and system integration and testing for transit authorities and railroad operators.
• Water & Wastewater Services Comprehensive water and wastewater engineering services including facility and buried infrastructure projects, water treatment plant design, distribution systems, lift stations, force mains, and master planning for municipal water utilities.
• Technology Services Infrastructure technology solutions including asset management, communication systems, drone technology, electrical/instrumentation and control systems, intelligent transportation systems (ITS), digital twin and asset management (via Praedico), and project visualizations for transportation and infrastructure clients.
• Alternative Delivery Services Alternative project delivery methods including design-build, Construction Manager/General Contractor (CMGC), public-private partnerships (P3), and progressive design build for transportation facilities and infrastructure projects.
• Construction Engineering & Inspection (CEI) Construction engineering and inspection services ensuring smooth transition from design to construction, including evaluation of transportation assets for repair, rehabilitation, or replacement for state DOTs and infrastructure owners.
• Engineering & Design Transportation and water infrastructure engineering and design services including bridges, highways, hydrologic and hydraulic design, pedestrian facilities, and utility engineering for state DOTs, airports, and municipalities.
• Environmental Services Environmental assessments, permitting, compliance monitoring, and mitigation services balancing project requirements with preservation of ecosystems and communities for transportation and infrastructure projects.
• Planning Services Multi-disciplinary planning services for transportation infrastructure projects at all stages with complete environmental documentation and stakeholder outreach for state DOTs and regional planning agencies.
• Program & Construction Management Program management and construction management services for complex infrastructure programs driving on-time and on-budget performance through project controls for transit agencies, DOTs, and large infrastructure owners.
• Public Works Services Municipal infrastructure services including active transportation, complete streets, capital program development, grant writing, and community engagement for local municipalities and public works departments.

Quantifiable outcome

• Ranked #98 on ENR Top 500 Design Firms 2025 (up from #103)
• +2 more outcomes

Named customers13 records

Segments6 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability3 records

Feature4 records

Partnerships

Seven partnerships are on record, tiered flagship and core.

• Egis GroupflagshipStrategic or Co-development Partner · 4 August 2025Strategic merger in August 2025 positions Lochner as the cornerstone of Egis' growth strategy in the United States. Lochner drives Egis' expansion leveraging expertise in aviation, surface transportation, and water infrastructure. Combined firm has 1,100+ professionals spanning 54 offices plus Egis' 265+ U.S. engineers.
• Green International AffiliatescoreStrategic or Co-development Partner · 1 January 2025Acquired in January 2025. New England-based surface transportation, water resources, and civil/site engineering company established in 1954. Headquartered in Tewksbury, MA with office in Lincoln, RI.
• PraedicocoreTechnology or Integration · 1 May 2024Partnership to provide digital twin and asset management solutions for passenger and freight rail networks. Adds Praedico's Digital Twin Platform to Lochner's technology service offering.
• TriunitycoreStrategic or Co-development Partner · 1 November 2023Acquired in November 2023. Delivers program/project management, construction management, and specialized communication systems/electrical engineering services. Founded by brothers Jonnie and Marvin Thomas. Headquartered in Denver with offices in Los Angeles and Seattle.
• K Friese + AssociatescoreStrategic or Co-development Partner · 1 May 2023Acquired in May 2023. Civil engineering firm specializing in water, drainage, transportation, and municipal services in Texas. Headquartered in Austin with offices in Houston, Round Rock, and San Antonio.
• KOA CorporationcoreStrategic or Co-development Partner · 1 December 2022Acquired in December 2022. Specializes in transportation engineering, mobility planning, and construction management for public agencies in Southern California. Offices in Monterey Park, Orange, Ontario, and San Diego.
• Armstrong ConsultantscoreStrategic or Co-development Partner · 1 December 2022Acquired in December 2022, fully integrated as Lochner in September 2024. Specializes exclusively in airport planning, engineering, and construction administration. Completed 3,000+ improvement projects at 130+ airports in western U.S.

Scale indicators8 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• WSP: Global engineering and professional services firm with a major U.S. transportation, transit, water, and environmental practice that competes directly with Lochner on state DOT, transit authority, and aviation work.
• Tetra Tech: Engineering and consulting firm with leading water, environment, and infrastructure practices; competes with Lochner's water/wastewater and environmental services segments.
• Kimley-Horn: Privately held planning and engineering design firm focused on transportation, land development, and environmental services; competes with Lochner on highway, aviation, and municipal public works contracts.
• AECOM: One of the largest global infrastructure consulting firms, offering planning, design, program management, and CEI across highways, transit, aviation, and water — directly competing with Lochner for the same federal, state, and municipal clients.
• Stantec: Global engineering consulting firm with significant U.S. presence in water, transportation, and environmental services; competes with Lochner on municipal water and state DOT projects.
• Burns & McDonnell: Employee-owned engineering, architecture, and construction firm with strong transportation, water, and aviation practices; competes with Lochner on DOT, airport, and water utility work.
• HDR: Employee-owned engineering, architecture, and consulting firm with strong transportation, water, and healthcare practices; a direct competitor on state DOT design, transit, and water/wastewater programs.
• TranSystems: Transportation-focused engineering and consulting firm providing planning, design, and program management for highways, bridges, transit, and rail — closely overlapping with Lochner's surface transportation and transit/rail practices.
• Jacobs Solutions: Major engineering services firm with deep transportation, water, and aviation practices; competes with Lochner on state DOT GEC contracts, transit programs, and federal infrastructure work.

Broad incumbents

• Arcadis: Global design and consultancy firm with transportation, water, and environment practices that compete with Lochner, particularly on large multi-jurisdiction infrastructure programs.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/lochner-314026671962778
• LinkedInlinkedin.com/company/lochner
• Instagraminstagram.com/hwlochner
• Xx.com/hwlochner

Revenue estimate

Valuation estimate

Number of profiles

Profiles13 records

Subsidiaries5 records

Funding overview

Funding rounds

Investors

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

M&A5 records

Investments

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

Frequently asked questions about Lochner