Projects & Experience

L & M Underground, Inc. was founded in 2000. Our crews bring more than 20 years of utility construction experience to every job, ensuring thorough planning, safety and quality performance. Our knowledgeable crew leaders have experience with directional boring in diverse environments including residential, congested roadways, railroad crossings and highways. We have a proven track record of completing large scale projects.

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Vail Pass - New Bridge Construction

L & M performed boring, trenching, bridge attachment, and fiber pulling for 12,000' of CDOT fiber backbone.

Fall 2023

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Town of Frisco - Nordic Center Fiber

Bored 1,000' of fiber along Nordic trail horizontal to Nordic Center.

June 2023

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HDD River Crossing - Grand County

Bored (100') under river and trenched remaining 900' to place 4" electrical conduit under river for hydroelectric.

May 2023

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Chilled Water System - CU Boulder

Bored and installed 8" and 10" HDPE as well as 14" TR Flex ductile iron crossing University of Colorado in Boulder's critical infrastructure.

Summer/Fall 2022

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American Civil Constructors Retreat Land at Lone Rock (RLLR), Bailey

Bored 9000’ and placed 2” and 3” conduit in solid rock using Rock Hammer

October 2020

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EV Charging Station - Hertz DIA

Bored and installed electrical conduit providing power to Hertz's electric vehicle charging stations.

July 2022


City of Delta Vehicle Detection Traffic Systems

Bored and installed 100 ft of fiber and electrical conduit.

June 2022


Lumen Bigfoot 4.1

10 miles of boring and fiber placement spanning Highlands Ranch, Centennial, Greenwood Village, Cherry Hills, Englewood, Sheridan and Denver, including work along CDOT right of ways on Belleview, C470 and Hampden.

May 2022


Fox Hollow Golf Course Bores

Bored and installed approximately 600 ft irrigation line size 6”, 8” and 10” on golf course including small creek crossing.

April 2021


Denver University HDPE for Chilled Water System

Bored and places 940 linear ft of two 14” fused HDPE for chilled water for HVAC system. Installed 4 manholes and 16 gate valves from 2” to 16” .

September 2021


St. Mary’s Waterline

Bored and installed 1300 linear ft of 4” and 6” water main. Approximately 700’ was placed using the rock hammer due to solid rock conditions.

October 2021

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CDOT Vail pass

7000’ of trenching along I-70 at top of Vail Pass to install fiber optics.

June 2021


City of Broomfield Sheridan Bouldevard

Fiber Interconnect, a 3 mile boring and fiber placement project.

Fall 2020

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CDOT PPSLI-70 Idaho springs.

Installed 13,000’ of 2” and 3” conduits for fiber and power in solid rock, cobble and boulder conditions.

May 2020

Sonnenalp Golf Course, Edwards

Installed a variety of irrigation 8”, 10” and 12” for golf course utilizing directional boring in mountain cobble conditions.

Fall 2021

City of Fort Collins

2020 – I-25 Electric Line relocation Project. 2021 Awarded on-call directional boring contractor for Fort Collins Light and Power.

Spring 2020

University of Northern Colorado West Campus Non-Potable Distribution System, Greeley,

Installed approximately 1000’ of 6” conduit including tie-ins.

Fall 2019

Crown Castle Fiber

Bored and installed approximately 14,000 LF of conduit, including fiber and vault placement.

August – December 2018


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