L & M Underground, Inc. is recognized as a leading provider of directional boring because of our reputation for quality and safety as well as our ability to complete more challenging projects. Based in Colorado and serving surrounding states like Wyoming, L & M Underground, Inc brings more than 26 years of experience to every job. As a reputible underground utility construction contractor, we complete every utility installation with attention to quality, safety, compliance and timeliness.

Horizontal directional boring and rock hammer drilling is our specialty, however, we offer a full range of underground utility construction services, including open trenching, hydro trenching, private locating, and potholing for utility verification and subsurface investigation. We install underground utilities of all types of projects including solar, lighting, signs, electric mains and services, communications, phone, cable, telco, fiber optics, water mains, water services, irrigation, drains and gas sleeves. Our knowledgeable crew leaders have experience with challenging projects including solid rock and cobble conditions, canal and river crossings, highway and railroad crossings. We work in diverse environments including hospitals, schools, colleges, golf courses, highways, airports, military bases, residential communities, downtown business districts, wind farms, solar farms, cell towers, substations and more. Our fleet of excavators and horizontal directional drills along with our experienced and certified equipment operators allow us to serve individual customers with small projects as well as perform large scale utility installations several miles in length.

Our team is ready to put their knowledge, skills, and expertise to work on your excavation project.As a Small Business Enterprise for CDOT, RTD and City of Denver and decades of experience we ready to help you meet your state and federal contract requirements.

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