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Safety, Quality & Service!!

About Us

Castrejon Inc. was founded in 1997. Since its inception, Castrejon Inc. has strived to provide quality, fast and affordable services for every one of its customers. We feel that we are at the top of our industry when it comes to Underground Utilities. 

Learn more about our underground drilling and boring services.


Bert Castrejon

Our Foreman

Michael Pertzborn – CI Utilities  Foreman

Randy Maple – Foreman with Castrejon Inc. since 2000 and has 20 years of underground utility experience.

Franklin Olson - Foreman with Castrejon Inc. since 1998 and has 19 years of underground utility experience.

John Lopez – Foreman

Chad Stevens -  Foreman

Each foreman started out as a laborer and has worked their way up to a foreman’s position. We promote from within the company as much as possible. Everyone that works here is given the chance to learn to operate every piece of equipment as they become familiar with the utility business. We are an equal opportunity employer.

Associations & Certifications

CERT Certification - City of St. Paul - Minority Business Enterprise Certificate

Targeted Group Business (TGB) - State of MN Certified

Midwest Minority Supplier Development Council - Member


Golden Shovel Standard - Certified 

Midwest Energy Association - Member

Minnesota Utility Contractors Association - Member

Metropolitan Airports Commission - Member

Associated General Contractors