Public engineering firm directory

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2LMN, Inc.

Lancaster, OH

Your Trusted Engineering Partner

WebsitePhone4 offices10 leaders4 credentialsFounded 1979Updated Jun 2026

Service detail: Land Development

Service: Land DevelopmentService: Site Drainage and Grading PlansService: Stormwater Pollution Prevention PlansIndustry: InfrastructureIndustry: GovernmentType: Civil Engineering+48 more

Carpenter Marty Transportation Inc

Columbus, OH

Founded in 2013 by Kevin Carpenter and Bill Marty, Carpenter Marty Transportation is a civil engineering firm specializing in roadway, bridge, traffic, planning, survey, and architecture services. Since its founding, CM has experienced significant growth while maintaining a clear focus on infrastructure design and client service. Headquartered in Columbus, Ohio, CM expanded in 2018 by opening new offices in Cincinnati, Ohio and Charleston, West Virginia. We expanded our services again in 2020 with the launch of Comma Designworks, a full-service architecture branch in Nashville, Tennessee. Infrastructure remains our core focus, supported by leadership that exemplifies our values.

Website4 offices12 leadersFounded 2013Updated Jun 2026

Service detail: Traffic Engineering

Service: Traffic EngineeringService: Traffic StudiesService: Traffic Impact StudiesIndustry: Highways & RoadsIndustry: BridgesType: Architecture & Engineering+29 more

E.L. Robinson Engineering Co.

Charleston, WV

Innovative Civil Engineering Firm

WebsitePhone8 offices6 projects1 leaders2 credentialsFounded 1978

Project: CUY-490/010-2.09/19.28 Opportunity Corridor 3

Service: Bridge & Structural EngineeringService: Construction Services & Alternative DeliveryService: Geotechnical EngineeringIndustry: TransportationIndustry: BridgesType: Civil Engineering+29 more

Larson Design Group, Inc.

Williamsport, PA

National Presence. Hyper-Local Focus.

WebsitePhone18 offices4 leadersFounded 1986Updated Jun 2026

Service detail: Civil Engineering

Service: Architecture & Interior DesignService: Civil EngineeringService: Site/Land DevelopmentIndustry: CommercialIndustry: EducationType: Architecture & Engineering+78 more