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ATCO Communications Services, LLC

Snohomish, WA

ATCO Communications Services, LLC is a contract engineering firm established in 1978 with headquarters in Snohomish, Washington and a Midwest office in Fort Wayne, Indiana. It specializes in telecom engineering, outside plant (OSP) engineering, permitting, right-of-way and easement services, geospatial services, and joint-use support for private and public markets nationwide.

WebsitePhone3 officesFounded 1978Updated Jun 2026

Service detail: Telecom Engineering

Service: Telecom EngineeringService: OSP EngineeringService: PermittingIndustry: TelecommunicationsIndustry: InfrastructureType: Telecom / RF Engineering+5 more
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Concord Engineering, Inc.

Bellevue, WA

Planning + Operations + Design

WebsitePhone2 offices12 projectsSize Estimate: 1-25 employeesUpdated Jun 2026

Project: Seattle Multimodal Terminal at Colman Dock

Service: Transportation PlanningService: Transit Planning & OperationsService: Corridor StudiesIndustry: TransportationIndustry: Highways & RoadsType: Transportation Engineering+37 more
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EDM International, Inc.

Fort Collins, CO

Reliability & Innovation Since 1982

Website4 officesFounded 1982Updated Jun 2026

Service detail: Engineering and Design

Service: Engineering and DesignService: Power Delivery Design & EngineeringService: Custom-Engineered Structures & FoundationsIndustry: Electric UtilitiesIndustry: Power Transmission & DistributionType: Power & Utility Engineering+38 more
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LineWorks Engineering, LLC

Atlanta, GA

A Trusted Connection

WebsitePhone3 officesUpdated Jun 2026

Service detail: Transmission Line Design

Service: Transmission Line DesignService: New Transmission Line ConstructionService: Transmission Line Rebuilds and UpgradesIndustry: Electric UtilitiesIndustry: Power Transmission & DistributionType: Electrical Engineering+25 more
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Sixty Mountain, PLLC

Kennewick, WA

Electrical consulting services

WebsitePhone1 office3 projects1 leadersUpdated Jun 2026

Project: Substation Commissioning Support

Service: Substation ServicesService: Panel Layout and DesignService: Ground and Lightning DesignIndustry: Electric UtilitiesIndustry: Power Transmission & DistributionType: Electrical Engineering+43 more
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