Rinker Design Associates, P.C.

What Rinker Design Associates, P.C. does

Rinker Design Associates, P.C. (RDA) is a Virginia-based professional civil engineering corporation founded in 1980, employing 250+ staff across 10 offices spanning Manassas (HQ), Fairfax, Fredericksburg, Richmond, Virginia Beach, Waynesboro, Abingdon, Galax, and Big Stone Gap. The firm delivers integrated engineering, surveying, environmental, right-of-way, construction management, and GIS services to government agencies, municipalities, utilities, and private developers, with deep specialization in VDOT and AASHTO standards and 13 documented service lines ranging from transportation and structures/bridges to water, wastewater, utilities, traffic, and site civil design.

RDA's commercial model is professional services revenue generated through project-based fees under competitive bidding and on-call contracts, with an enterprise field sales motion targeting state DOTs, municipalities, and utility authorities. The firm reports 10,000+ cumulative projects and 33 alternative delivery engagements (Lead Designer on 22), including VDOT's first Progressive Design-Build project, indicating capability in higher-margin collaborative delivery models. Customer concentration sits with public-sector clients — most prominently VDOT — supplemented by municipal water/sewer authorities and a smaller portfolio of private development work.

In 2024, RDA became part of Trilon, a multi-platform infrastructure consulting group targeting Top 5-10 industry status by 2030. The partnership positions RDA alongside sister firm DRMP, with stated intent to expand work across the southeastern United States beyond its Virginia core. Leadership comprises President/CEO Mo Kim, PE, DBIA; COO/Director of Engineering Mark Gunn, PE, DBIA; and CBO Darell Fischer, PE, DBIA. Technology footprint centers on GIS, AASHTO/VDOT design standards, and alternative project delivery know-how rather than proprietary software products.

Name

Rinker Design Associates, P.C.

Legal name

Rinker Design Associates, P.C.

Website

https://rdacivil.com

Company type

Private

Founded year

1980

Operating status

Operating

Headcount range

101–250 employees

Short description

Rinker Design Associates, P.C. is a Virginia-based civil engineering firm with 250+ employees across 10 offices, delivering transportation, water, wastewater, environmental, surveying, and right-of-way services primarily to VDOT, municipalities, and utilities across the Mid-Atlantic.

Ownership category

akta.pro rank

Product category

Civil Engineering Services

NAICS

Other Specialized Design Services (54149)

SIC

Water, Sewer, Pipeline, Comm & Power Line Construction (1623)

akta.pro primary industry

Construction Management & Delivery (EPCM/CMAR/Design-Build Oversight) (EUANALAE)

akta.pro secondary industry

Urban Planning & Master Planning (BPAHAKAD)

Keywords

• Civil engineering services
• Transportation engineering
• Water and wastewater engineering
• Land surveying
• Construction management

Headquarters

HQ city

Manassas

HQ country

United States

HQ region

North America

Offices10 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Civil Engineering Professional Services: RDA provides professional civil engineering services to government agencies, municipalities, and private industries. Revenue is generated through project-based fees for design, surveying, construction management, and inspection services across transportation, utilities, water, wastewater, and environmental disciplines.

Go-to-market motion2 records

Distribution channels1 record

Marketing channels5 records

Core offering

Rinker Design Associates, P.C. is a civil engineering professional services firm delivering planning, design, and construction management for public infrastructure. Its services span transportation, utilities, water, wastewater, environmental, GIS, surveying, right of way, site civil, structures and bridges, traffic engineering, construction management, and alternative project delivery, primarily for Virginia Department of Transportation, local municipalities, and private developers.

Product overview

Rinker Design Associates (RDA) is a Virginia-based civil engineering firm offering a comprehensive portfolio of 13 core professional services for infrastructure projects. The services span transportation (highways, interchanges, bridges), utilities (water, wastewater, gas, electric, fiber), environmental compliance, land acquisition, surveying, and construction management. These services operate as an integrated offering, with teams often collaborating across disciplines on projects—for example, Right of Way teams supporting Transportation projects, or GIS technology enhancing Water and Wastewater asset management. The company operates as a single unified civil engineering practice rather than discrete software products.

Differentiator

Problem solved

Functional benefit

Products and services

• Transportation Engineering Planning, design, and engineering services for roadway and transportation infrastructure projects, delivered primarily to state departments of transportation and municipal clients.
• Utilities Engineering Engineering services for utility infrastructure, including stormwater and underground utilities, serving public agencies and private developers.
• Water and Wastewater Engineering Planning and design of water and wastewater systems for municipalities, utilities, and private clients.
• Environmental Services Environmental engineering and permitting services supporting infrastructure and development projects.
• GIS Services Geographic Information Systems mapping and spatial data services for infrastructure and asset management.
• Surveying Land surveying services supporting infrastructure, land development, and right-of-way projects.
• Right of Way Services Right-of-way acquisition and management services for transportation and infrastructure projects.
• Site Civil Engineering Site civil engineering services for land development and private development projects, including grading, drainage, and site layout.
• Structures and Bridges Structural engineering and bridge design services for public infrastructure projects.
• Traffic Engineering Traffic engineering and analysis services supporting transportation and land development projects.
• Construction Management Construction management and inspection services for public infrastructure projects.
• Alternative Project Delivery Alternative project delivery services such as design-build and similar methods for infrastructure clients.

Quantifiable outcome

• Over 10,000 projects successfully delivered over 44 years
• +2 more outcomes

Named customers8 records

Segments5 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Three partnerships are on record, tiered core and minor.

• TriloncoreStrategic or Co-development Partner · 1 January 2024RDA joined the Trilon family of infrastructure consulting firms in 2024. Trilon aims to build a Top 5-10 infrastructure consulting firm by 2030 by bringing together the nation's best engineering and planning firms. The partnership enables RDA to benefit from expanded resources and sister firm support while maintaining its identity and operations. President Mo Kim noted the partnership enables RDA to become an even better company for employees and clients, fund growth and ownership transition, and compete in the consolidating architecture, engineering, and construction industry.
• DRMPminorStrategic or Co-development Partner · 1 January 2024DRMP is a sister firm within the Trilon family. With the recent partnership with Trilon and DRMP, RDA's work is continuing to expand across the southeastern United States. The relationship provides collaborative opportunities between the engineering firms under the Trilon umbrella.
• Virginia Department of Transportation (VDOT)coreOthersRDA has extensive ongoing working relationships with VDOT, designing bridges and transportation infrastructure per VDOT standards. RDA has served as Lead Designer on VDOT's first Progressive Design-Build project. Staff are certified for VDOT inspections and work within VDOT frameworks and local standards.

Scale indicators8 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• DRMP: Sister firm under the Trilon platform offering identical civil engineering, transportation, water, and construction management services. Direct peer given shared parent, overlapping service portfolio, and stated collaboration on projects across the southeastern U.S.
• Kimley-Horn: Top U.S. privately-held engineering consulting firm with strong transportation, water, and land development practices. Direct competitor for VDOT and Mid-Atlantic municipal on-call contracts, and a benchmark mid-sized peer by culture and ownership structure.
• Timmons Group: Virginia-headquartered civil engineering consulting firm with strong transportation, water resources, and land development practices. Direct peer competing for the same VDOT and Virginia municipal clients with similar service mix and regional footprint.
• Michael Baker International: Engineering consulting firm with deep transportation, bridge, and water practices serving state DOTs and municipalities. Direct competitor for VDOT and Mid-Atlantic infrastructure work with comparable mid-sized firm operating model.
• Volkert: Engineering firm with strong transportation and water practices serving state DOTs across the Southeast. Comparable by service mix, mid-sized scale, and public-sector client base, including design-build delivery experience.
• Whitman, Requardt & Associates (WRA): Mid-Atlantic engineering firm with deep transportation, water, wastewater, and structural bridge practices serving Virginia, Maryland, and D.C. agencies. Direct competitor for VDOT and Mid-Atlantic municipal on-call contracts with comparable size and service mix.

Regional players

• Clark Nexsen: Mid-Atlantic architecture and engineering firm with transportation, water, and site civil practices based in Virginia and North Carolina. Direct competitor for VDOT and Virginia local-government work, with comparable size and regional focus.

Broad incumbents

• WSP USA: Global engineering consulting firm with extensive transportation, water, and environmental practices operating in the Mid-Atlantic. Competitor for large VDOT and Virginia municipal projects, with broader geographic reach and larger scale.
• Stantec: Global engineering consulting firm with significant water, transportation, and environmental practices serving municipalities and DOTs. Competes for VDOT and Virginia local-government work with broader geographic and service breadth.
• AECOM: Global infrastructure consulting firm with major transportation, water, and environmental practices serving state DOTs and large municipalities. Competitor for the largest VDOT mega-projects and broader Mid-Atlantic public-sector work.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/rinkerdesign
• LinkedInlinkedin.com/company/rinker-design-associates-p.c.
• Instagraminstagram.com/rdacivil

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 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 Rinker Design Associates, P.C.