SE3

What SE3 does

SE3, LLC is a privately held civil engineering consulting firm founded in 2004 and headquartered in Kansas City, Missouri, with six offices across Texas, Illinois, Missouri, and surrounding states. The firm provides a full suite of infrastructure engineering services organized into nine practice areas: Transportation Services, Structural Design & Inspection, Construction Observation, Storm Drainage Systems, Water/Sanitary Infrastructure, Right-of-Way Services, Aviation, Site Development, and Program and Project Management. Its technical scope spans feasibility studies through complete structure replacement, covering projects from local culverts and ADA sidewalk improvements to 28-span bridges and multi-billion-dollar interstate design-build programs.

SE3's client base is dominated by state Departments of Transportation (notably IDOT and TxDOT), toll authorities (Illinois Tollway, NTTA, CTRMA), municipal governments, and a select group of private-sector clients including Tractor Supply Company. The firm typically performs as a subconsultant to larger prime contractors on marquee design-build pursuits (AECOM on the $1.74B LBJ East; TranSystems; Burns & McDonnell; EXP US Services) and as a prime consultant on smaller municipal and statewide programs such as the IDOT Statewide Bridge Inventory covering 26,000+ bridges through 2027. Revenue is generated through project-based, quote-based professional fees for design, inspection, program management, and construction observation services, with no publicly disclosed pricing tiers or financial statements.

The firm operates a sales-led go-to-market in which senior leadership, including multiple Vice Presidents and office managers, directly cultivate relationships with state DOTs, toll authorities, counties, and municipalities. SE3 is licensed as a professional engineering firm in multiple states, holds NBIS-certified bridge inspection credentials, and maintains active memberships in ACEC, ASCE, ITE, APWA, DBIA, and SAME. Following a leadership transition in summer 2025 in which founding CEO Vernal Stewart handed the President and CEO role to Raymond Kumapley, the firm continues operating as an independent, founder-origin LLC with no disclosed institutional investors or external funding.

Name

SE3

Legal name

SE3, LLC

Website

https://se3.us

Company type

Private

Founded year

2004

Operating status

Operating

Headcount range

101–250 employees

Short description

SE3 is a privately held civil engineering consulting firm founded in 2004 that provides transportation, structural, municipal, site development, and right-of-way services to state DOTs, toll authorities, municipalities, and select private developers across six US offices.

Ownership category

akta.pro rank

Product category

Civil Engineering Consulting

NAICS

Engineering Services (54133), Engineering Services (541330), Architectural, Engineering, and Related Services (5413)

SIC

Services-Engineering Services (8711), Services-Engineering, Accounting, Research, Management (8700)

akta.pro primary industry

Systems Engineering & Technical Program Management (BPAHAIAI)

Keywords

• Civil engineering consulting
• Transportation engineering
• Structural design inspection
• Municipal infrastructure
• Construction management services

Headquarters

HQ city

Kansas City

HQ country

United States

HQ region

North America

Offices4 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: SE3 generates revenue through providing civil engineering consulting services to government agencies, municipalities, and private sector clients. Revenue is project-based, earned through professional fees for design, inspection, program management, and construction observation services. Projects range from small local improvements to multi-billion dollar interstate design-build programs.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

SE3 is a professional civil engineering consulting firm that provides transportation, structural, municipal, water/sanitary, stormwater, right-of-way, aviation, site development, and construction management services to government agencies, municipalities, and private sector clients. Revenue is earned through project-based professional fees for design, inspection, program management, and construction observation across projects ranging from local improvements to multi-billion-dollar design-build programs. The firm is PE-licensed across multiple states and delivers compliance work for federal and state transportation standards.

Product overview

SE3 is a civil engineering consulting firm offering a comprehensive portfolio of infrastructure engineering services organized as distinct practice areas. The company's service offerings include Transportation Services (highway planning, traffic engineering, ITS, and tolling systems), Structural Design & Inspection (bridge design, rehabilitation, and NBIS inspections), Construction Observation (inspection and documentation), Storm Drainage Systems, Water/Sanitary Infrastructure, Right-of-Way Services, Aviation, Site Development, and Program and Project Management. These services operate as integrated practice areas that SE3 deploys across projects, often combining multiple service lines on complex infrastructure projects such as design-build freeway reconstructions and statewide bridge programs.

Differentiator

Problem solved

Functional benefit

Products and services

• Transportation Services Comprehensive transportation engineering services including local, regional, and interstate highway planning and design, intersection studies, traffic signal design, ITS, toll collection systems, and intelligent transportation systems design for state DOTs, toll authorities, and municipalities.
• Structural Design & Inspection Structural engineering services spanning bridge planning, design, maintenance and rehabilitation, retaining wall design, NBIS bridge inspections, load ratings, and sign structure design for projects ranging from box culverts to 28-span bridges, serving DOTs, toll authorities, and municipalities.
• Construction Observation Construction contract documentation and observation services including resident engineering, materials coordination, inspection, QA/QC, pay estimate processing, and project closeout documentation for transportation and municipal clients.
• Storm Drainage Systems Stormwater management services including hydrologic and hydraulic design, culvert design, detention analysis, floodplain studies, storm sewer design, erosion and sediment control, and SWPPP preparation.
• Water/Sanitary Infrastructure Water and sanitary distribution infrastructure design services including water main replacements, transmission main design, gravity sanitary sewer design, relief sewer design, and EPA-compliant overflow control programs.
• Right-of-Way Services Land acquisition and property rights services including real estate negotiations, title research, project administration, permitting, property acquisition, and drone support for utility, electric, wind, solar, pipeline, oil, gas, and mining industries.
• Aviation Services Airport engineering services including site development, utility systems relocation, stormwater management, airfield pavement design, and land-side services for major airport facilities.
• Site Development Civil site development services including site evaluation, concept layout, entitlements, site design, grading and drainage, stormwater reports, FEMA floodplain analysis, and local, state, and federal permitting for retail, residential, commercial, and government projects.
• Program and Project Management Program and project management services including asset management, cost and schedule controls, plan review, consultant contract management, standards development, risk management, and construction audits for multi-billion-dollar transportation programs.

Quantifiable outcome

• Over 21 years in business serving government and private sector clients
• +3 more outcomes

Named customers11 records

Segments5 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Seven partnerships are on record, tiered core.

• AECOMcoreStrategic or Co-development PartnerSE3 serves as a team member on AECOM-led design-build projects for TxDOT. This includes the $1.74 billion LBJ East (I-635) reconstruction project where SE3 provides retaining wall design and layout services. The partnership enables SE3 to participate in major multi-billion dollar interstate improvements.
• TranSystems Corp.coreStrategic or Co-development PartnerSE3 served as subconsultant to TranSystems Corp. on the North Central DuPage Regional Trail project for the Forest Preserve District of DuPage County. SE3 provided design engineering services for the 1.73-mile trail project.
• Burns & McDonnellcoreStrategic or Co-development PartnerSE3 played a vital role in the $37 million I-280 Bridge Rehabilitation over the Mississippi River as part of the Burns & McDonnell/IDOT team. SE3 provided deck design, drainage design, and evaluation services for this 28-span bridge project.
• EXP US ServicescoreStrategic or Co-development PartnerSE3 served as Lead Drainage Engineer on the $17.5 million IDOT I-80 Interchange drainage improvements project led by EXP US Services. SE3 developed drainage plans for widening and reconstruction including storm sewer, detention basin, and culvert design.
• Central Texas Mobility Constructors (Webber/Texas Sterling JV)coreStrategic or Co-development PartnerSE3 was subconsultant to Central Texas Mobility Constructors (joint venture of Webber and Texas Sterling) on the $426 million Manor Expressway project. SE3 completed various design tasks on this design-build toll road project including retaining wall design, ITS infrastructure, and quality assessment reviews.
• Illinois Department of Transportation (IDOT)coreStrategic or Co-development PartnerSE3 was selected by IDOT for the Statewide Bridge Inventory (SNBI) compliance project. SE3 leads a team of over 50 staff and 6 subconsultants to update inventory data for 26,000+ bridges across Illinois by 2027. Working with IDOT Bureau of Programming and Bureau of Bridges and Structures.
• NTTA (North Texas Tollway Authority)coreStrategic or Co-development PartnerSE3 prepared designs for all ITS and tolling systems on the SH 360 project, including electronic toll collection, gantries, and communications network. All ITS components conform to National Transportation Communication for ITS Protocol and are compatible with TxDOT and NTTA operating systems.

Scale indicators5 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• TranSystems: Mid-sized transportation-focused engineering and consulting firm; named as a SE3 prime-partner on the North Central DuPage Regional Trail — directly comparable in scale, service mix (transportation, structural, planning), and government agency client base.
• EXP US Services: Multi-discipline engineering firm serving DOT, municipal, and private clients in transportation and infrastructure; listed as SE3's prime-partner on the I-80 Interchange drainage project, indicating comparable project size, geographic reach, and technical offerings.
• Lochmueller Group: Mid-sized Midwest-based civil engineering consultancy specializing in transportation, structural, water, and site development for state DOTs and municipalities — near-identical service portfolio, headcount band, and client mix to SE3, including multi-state operating geographies (Illinois, Indiana, Missouri).
• Crawford, Murphy & Tilly (CMT): Mid-sized Midwest civil engineering firm providing transportation, structural, water resources, and aviation services to DOTs, counties, and municipalities — directly comparable in firm size, practice areas, and government agency concentration.
• HR Green: Multi-discipline engineering and consulting firm with strong Midwest presence serving state DOTs, counties, and municipalities on transportation, water, and site development — directly comparable to SE3's regional reach and service mix.
• Baxter & Woodman: Mid-sized civil engineering firm focused on transportation, water, wastewater, and municipal infrastructure for Illinois, Wisconsin, and Midwest clients — comparable in scale and core services to SE3 with overlapping Illinois DOT client base.

Broad incumbents

• Kimley-Horn: One of the largest US transportation and site development engineering consultancies; operates nationally across SE3's core disciplines but at materially greater scale and broader service portfolio — relevant as a competitive incumbent on larger pursuits.
• Burns & McDonnell: Major full-service engineering, architecture, and construction firm; named as a SE3 prime-partner on the I-280 Bridge project, illustrating SE3's role as subconsultant to a much larger incumbent pursuing DOT and tollway work at greater scale.
• Stanley Consultants: Mid-to-large engineering and construction management firm offering transportation, structural, water, and program management services to federal, state, and municipal clients — overlaps with SE3's portfolio but operates at greater scale and broader geographic reach.

Regional players

• Wight & Company: Mid-sized Midwest architecture, engineering, and construction firm with strong transportation and municipal practice — directly comparable service mix but more concentrated geographically than SE3.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/pfbid02dJCt7mzSg1sMCW3R93YWZJYAczuGNmjAVDrSZYKKpRF7EJbnK91yy9HyPFVozqY6l

Revenue estimate

Valuation estimate

Number of profiles

Profiles16 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 SE3