DLZ Corporation

Columbus, OH

Innovative Ideas | Exceptional Design | Unmatched Client Service

Services: 58
Offices: 1
Projects: 9
Leaders: 3
Size Estimate: 500+ employees

Overview

DLZ Corporation is a large, multi-discipline architecture and engineering firm with over 100 years of A/E services history, headquartered in Columbus, Ohio. It brings a collaborative, multidisciplinary approach to professional services across transportation, water/wastewater, architecture, construction management, and land surveying. DLZ is ranked #143 in the ENR Top 500 Design Firms (2025) and #11 in ENR Midwest, with a diverse project portfolio spanning transportation, public safety, judicial, water infrastructure, parks, and institutional facilities across the Midwest and beyond.

Size Estimate: 500+ employees

Services

Transportation Engineering

DLZ keeps communities moving through the full range of transportation engineering - designing complex interchanges and highways, restoring historic bridges, developing traffic solutions, creating multiuse trails, and advancing transit systems.

Interchange and Highway Design Bridge Design and Restoration Trail Design Roundabout Design and Public Education Transit Systems Traffic Solutions

Architecture

Responsive and sustainable architectural design for public and institutional facilities including correctional, judicial, police/fire/EMS, and higher education.

Correctional Facility Design Judicial Facility Design Police / Fire / EMS Facility Design Complete Facility Design Interior Design Renovation / Restoration Historic Restoration ADA Compliance LEED Consulting and Commissioning Master Planning

Water & Wastewater Engineering

Design and consulting for water distribution, wastewater collection and treatment, and public works infrastructure.

Water Distribution System Design Wastewater Collection and Treatment Public Works Design

Construction Services

Construction management, observation, scheduling, claims analysis, value engineering, and laboratory testing for transportation and utility projects.

Construction Management Construction Observation Scheduling Claims Analysis Value Engineering Document Control Risk Analysis Field Quality Control Laboratory Testing

Land Surveying

Precision surveying services across numerous states with more than 50 full-time field crews, including right-of-way acquisition, ALTA, boundary, topographic, and easement surveys.

ALTA/ASCM Land Title Surveys Boundary Surveys Topographic Surveys Easement Surveys Land and Right-of-Way Acquisition Surveys

Structural Engineering

Integrated Structural Design Supporting Dlz's Architecture Transportation Projects Covering New Construction Renovation Restoration Across Public Institutional Building Types

Mechanical Engineering

HVAC, plumbing, and fire protection design for institutional and public facilities, delivered as part of DLZ's integrated architecture and engineering practice.

Plumbing / Fire Protection Design

Electrical Engineering

Power systems and electrical design for public facilities and infrastructure projects, integrated within DLZ's multidisciplinary project teams.

Landscape Architecture

Landscape Architecture For Public Facilities Parks Civic Spaces

Program Management

Program management, needs assessments, feasibility studies, building security assessments, building programming, strategic planning, and life cycle cost analysis.

Needs Assessments Feasibility Studies Life Cycle Cost Analysis Building Security Assessments Staffing Analysis / Projections

Industries

Highways & Roads Transportation Wastewater Water Supply Public Safety Justice & Corrections Transit Parks & Open Space Sports & Recreation Education Healthcare Government

Firm type

Architecture & Engineering Electrical Engineering Fire Protection Engineering Land Surveying Landscape Architecture Mechanical Engineering Structural Engineering Transportation Engineering Water / Wastewater Engineering

Project types

Highway Interchanges Historic Bridges Transit Centers Trails and Greenways Correctional Facilities Courthouses and Justice Centers Police and Fire Stations Water and Wastewater Treatment Plants Sports Parks Conference Centers Photovoltaic Plants

Projects

SR 161 at Maple Canyon Avenue

Columbus, Ohio | Transportation / Highways

Transportation engineering for state route improvement.

Transportation Engineering

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Jason Hargrove Transit Center

Detroit, Michigan | Transit

Transit center design.

Architecture Transportation Engineering

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Cooperativo PV Plant

San Carlos, Costa Rica | Water / Wastewater

Photovoltaic plant engineering in Costa Rica.

Electrical Engineering

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Kilbourne Run Sports Park

Columbus, Ohio | Parks & Recreation

Sports park design and civil engineering.

Civil Engineering Landscape Architecture

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City of Noblesville Bridge of Flowers

Noblesville, Indiana | City of Noblesville | Transportation / Highways

Bridge design and restoration with landscape architecture.

Transportation Engineering Structural Engineering

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ALCOSAN Construction Management Services for Contract 1704 Safety Upgrades

Pittsburgh, Pennsylvania | ALCOSAN (Allegheny County Sanitary Authority) | Water / Wastewater

Construction management services for wastewater authority safety upgrades.

Construction Services

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Big Walnut Trail for City of Columbus

Columbus, Ohio | City of Columbus Department of Recreation and Parks | Parks & Recreation

Trail design for the City of Columbus Department of Recreation and Parks.

Transportation Engineering Landscape Architecture

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Conference Center Gannon Building, Lansing Community College

Lansing, Michigan | Lansing Community College | Higher Education

Architecture and engineering for college conference center.

Architecture

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Ottawa County Family Justice Center

West Olive, Michigan | Ottawa County | Judicial / Courts

Architecture and engineering for county family justice facility.

Architecture

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Software

Revit Architecture

Credentials and affiliations

Certifications

LEED-Accredited Professionals on staff

Awards

ENR Top 500 Design Firms #143 (Engineering News-Record, 2025)ENR Midwest Top Design Firms #11 (Engineering News-Record Midwest, 2025)Building Design+Construction Giants 400 Report #48 Top A/E Firm (2025)#15 Zweig White Hot Firms (2025)

Leadership

Ram Rajadhyaksha

President, DLZ Corporation

Named President of DLZ Corporation in 2026, continuing a multigenerational family business story. Previously served as Executive Vice President with 18 years of executive experience.

Vicki Briggs-Rasor

Chief Financial Officer

Amy Malone

HR Director

Over 25 years of human resources leadership. SHRM Senior Certified Professional (SHRM SCP). Miami University (OH) alumna.

Offices

Columbus, OH

Headquarters

Columbus, OH

800.336.5352

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