Pinnacle Construction and Directional Boring, Inc. is a Licensed and Bonded SC General Contractor specializing in underground utility construction and is based in Charleston SC. We have been in operation since 2001 with a focus on heavy utility construction since 2004. Erik Carlson, the president of the company and a US Navy veteran, is a licensed South Carolina General Contractor, with a Public Utility Electric Specialty

Electric Distribution for Primary, Secondary, Services and Street Lighting electric…

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Electric Distribution for Primary, Secondary, Services and Street Lighting electric lines

Pinnacle is licensed in S Carolina to provide turn-key electric distribution utility line construction.  Pinnacle is the primary Horizontal Directional Drilling company for South Carolina Electric and Gas, and is under contract for the entire Charleston Metro and Low Country districts.   Pinnacle also holds contracts with Berkeley Electric Cooperative for the Tri-County area, as well.   Additionally, Pinnacle serve many of the local site contractors and electrical contractors in the underground electric utility line construction as well. Pinnacle will provide it’s clients with a single contract source capable of digging, trenching, and drilling; extending or upgrading underground utility lines; of installing, activating, and servicing those high voltage and medium voltage electric lines.  We will be able to provide this concept of service in an entire town, neighborhood, an apartment complex, or a single dwelling household – regardless of the utility.   There will be no need to coordinate 3 or 4 different and unrelated contractors trying to complete a job with no integration or cooperation.  Pinnacle is able to handle any of these tasks : Setting UG Switchgears, Transformers, Handholes, Vaults, Pedestals, Meter Bases, and Street Lights.   Pull and terminate UG primary, secondary, service and streetlight conductors upto and including 1/0, 4/0, 750MCM and larger sized cables.

CATV, Telephone and Fiber Optic Line Construction   Our crews…

CATV, Telephone and Fiber Optic Line Construction


Our crews are equipped and experienced with the installation of Residential, Commercial, Industrial and Military grade communications.   From FTTH / FTTP (Fiber To The Home / Premise), to Backbone FiberOptic Loops, to Duct Bank construction at the State Ports Authority, Charleston International Airport, Joint Base Charleston – Air Force and  Naval Weapons Station, to Marine Corp Air Station and Parris Island – and beyond.

Water - Mains and Services   Sewer - Forced Main and…

Water – Mains and Services   Sewer – Forced Main and Gravity

Pinnacle has crews experienced in the installation of water services for residential, commercial, irrigation needs.   We can install water mains up to 24” in diameter – including HDPE (High Density Polyethylene) , FPVC (Fusible PVC), C900 or C905 restrained joint pipe, restrained ductile iron and steel lines.  We are experienced with the installation of both small and large diameter forced main sewer lines (up to 24”) and gravity sewer service lines in residential service applications.

Natural Gas Distribution by Horizontal Directional Drilling or HDD Pinnacle…

Natural Gas Distribution by Horizontal Directional Drilling or HDD

Pinnacle has been providing HDD services for Gas Distribution contractors in the Low Country since 2004.   We can install MDPE, HDPE and Steel gas lines from 1.25” to 12” – or larger if required.   Pinnacle has made successful wetlands bores in excess of 1,400 linear feet and crossed interstates at depths of up to 25’ deep.

Pinnacle Construction & Directional Boring, Inc is here to provide a local source for quality installation & construction of underground utility lines – specifically by horizontal directional drilling – in the electric, gas, water, sewer, CATV, fiber optic, communication markets, using local people, and charging local rates.

 Interested in joining the team? Candidates can submit a general application via our On-Line Form