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Companies

COMBINED STRENGTH, UNPARALLELED RESOURCES

The SDI family of companies provides its clients with the very best technological innovations and solutions in the world of specialized construction. Built on the principles of hard work, integrity and honesty, SDI has developed a reputation for providing our clients with cost-effective solutions.


ASI Logo with SDI

ASI Construction LLC

  • ASI is a construction leader in the water resources industry, with their personnel having successfully completed more than one-hundred fifty dam and dam rehabilitation projects, including thirty-five new dams and one-hundred ten dam modification and remediation projects. ASI operates throughout the USA and internationally.

Online:

Markets:

  • Heavy/Civil
  • Power
  • Water Resource

Services:

  • Dam Construction & Remediation
  • Design / Build Contractor
  • Underground Construction
  • Spillway & Intake Development
  • Major Water Resource Projects
  • Inspection / Maintenance
  • Hydraulic Structures

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Costal Drilling East LLC

  • Coastal Drilling East (CDE) offers the industry’s widest range of geotechnical capabilities. Custom-built grout plants, grouting equipment for dam foundation grouting, and custom drilling platforms for anchor work, allows CDE to service the specialized needs of the geotechnical construction industry.

Resources:

Markets:

  • Civil
  • Mining

Services:

  • Geotechnical Construction
    • Anchors
    • Directional Drilling
    • Micropiles
    • Shoring
    • Grouting

20210729 Coastal Well Service LLC (Blue & Gold) cw FINAL

Costal Well Service LLC

  • Coastal Well Service (CWS) has developed the widest range of techniques and assembled the most experienced personnel to ensure our clients get the best we have to offer, in solutions, in safety and in service. With more than 2,500 wells serviced, CWS is the region's service provider of choice for clients and state agencies.

Online:

Markets:

  • Civil
  • Mining
  • Oil & Gas

Services:

  • Well Service
  • New Hole Drilling
  • Site Preparation
  • Wireline Services
  • Water Hauling

Heeter Geotechnical Construction

Heeter Geotechnical Construction LLC

  • Heeter Geotechnical Construction (HGC) is a Heavy Civil General Contractor specializing in Dam Rehabilitation, Dam Remediation, Water Resources, and other Heavy Civil Construction projects. HGC partners with the other members of the SDI family to offer exceptional service to its clients.

Online:

Markets:

  • Civil
  • Water Resource

Services:

  • Dam Construction, Dam Remediation, and Dam Rehabilitation
  • Complex Rehabilitation of Concrete and Earthen Dams
  • Major Earthmoving, Excavation Projects
  • Rock Excavation and Processing
  • Complex Cofferdam Construction
  • Marine Lock Structures / Waterways/ Spillways

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Ludwig Drilling LLC
  • Ludwig Drilling LLC (LDW) is a leading geotechnical construction services provider in the mountain west market. With its culture for safety and efficiency, in combination with employee retention, Ludwig sets the industry standard for excellence in providing quality, on time, and under budget projects for its valued clients.

Online:

Markets:

  • Civil
  • Mining
  • Oil & Gas

Services:

  • Drilled Shafts - Turn Key and Drill Only applications
  • Micropiles - Cased and Hollow Bar
  • Soil Nails
  • Shotcrete Walls
  • Shoring
  • Anchors

20170608 NAD Logo w Full Lettering cw FINAL

North American Drillers LLC

  • North American Drillers (NAD) is an international leader in mechanically excavated shafts. NAD offers an unprecedented combination of shaft development services that provides its clients with turnkey construction solutions in both rural and urban conditions.

Online:

Markets:

  • Civil
  • Mining
  • Oil & Gas

Services:

  • Blind Bore Shaft Development
    • Large Diameter
    • Small Diameter
  • Raise Bore Shaft Development

20181010 TEK Piles Logo AI w SDI cw D1

TEK Piles LLC

  • With two chief locations in Pennsylvania and Colorado, TEK Piles provides the national market with turnkey helical pile services. From design to supply, to installation, TEK Piles provides an unrivaled turnkey package to its clients daily.

Online:

 

Markets:

  • Civil
  • Oil & Gas

Services:

  • Helical Pile Supplier
  • Helical Pile Installer