secant pile walls

Alliance Diversified Enterprises, Inc. (ADEI) is a full service licensed contractor specializing in the design and installation of deep and specialty foundations, earth retention, and heavy civil operations, with over 30 years of projects in California, Nevada, Arizona and more. Projects range from small residential to large commercial and public works.

auger cast (CFA) pilescaissonsdeep excavationsdeep soil mixinggradingmicropilessheet pilingsoldier beam and laggingtiebacks and rakersvibratory soldier beam installationvibro compactionwet and dry utility installation

Blois Construction, LLC is an 'A' licensed, union heavy civil contractor based in Oxnard, California, serving Southern California. The company serves both public and private sectors and specializes in managing highly complex, large-scale infrastructure projects with budgets exceeding $50 million, prioritizing safety and quality.

bore and jackcast-in-place concretedirectional drillingearthworkgas piping installation (fused or welded)jet/chemical groutingMicro tunnelingpaving and trench restorationprecast concreterough and fine gradingsheet pilingshoring systems

Curtis Drilling is a foundation drilling contractor formed in 1979, providing caisson drilling, soldier pile drilling, shoring, geotechnical, and specialty drilling services for commercial, infrastructure, institutional, and residential projects across Southern California and the Western United States. It operates its own fleet of drills, concrete pumps, cranes, and lowboy trucks.

caisson drillingCFA drillingdeep rock drillingdewatering wellsequipment rentalhillside drillinglimited access drillingmicropile drillingpier drillingrock and core drillingshoringsoilnail wallssoldier pile drillingtieback anchored walls

DBM Contractors, Inc. is a specialty geotechnical contractor founded by Donald B. Murphy and family owned for over six decades. The company partners with general contractors and developers to deliver engineering-backed earth retention and foundation support across the Pacific Northwest, Alaska, and the West.

augercast pilesconcept budgetingdisplacement pilesdrilled shaftsfull service estimatinginternal bracingmicropilespipe pilesrigid inclusionssoil nail wallssoldier pile wallsstamped design drawingstieback anchorstiedownsunderpinning

Engineering & Construction Innovations, Inc. (ECI) is a full-service self-performing heavy civil contractor established in September 1999 by Robb Johnson, PE and Shane McFadden, PE. ECI serves public and heavy industrial clients in the Midwest and throughout the United States, specializing in geotechnical construction, pipeline rehabilitation, dam/hydro construction, underground construction, and custom design-build solutions.

dam construction and rehabilitationdeep foundation systemsdesign-builddrilled shaftsdriven pilesearth anchoringearth shoringgeotechnical constructiongroutingmicropilesmicrotunnelingshaft constructionshotcretetrenchless pipeline rehabilitationtunneling

FR Engineering Group is a geotechnical, geostructural, and waterfront engineering firm servicing New England and Colorado since 2019. It offers design and construction support services to developers, property owners, public agencies, corporations, institutions, and energy companies, and is a certified WBE and DBE engineering firm.

Breakwaters/jettiesBulkheadsCoastal engineeringDam inspection & remediation designdeep foundation designDrilled pier wallsFloating docks & marinasground improvementLiquefaction analysisMooring facilitiespermitting servicesPiersRevetmentsSeawallsshallow foundation designslope stabilitySoldier pile & lagging wallssubsurface investigationsunderpinning