Lithos Engineering was formed with the vision of serving our communities by providing our clients and their projects with recognizable value through prudent site evaluations, constructible solutions, and an understanding of project risks. Lithos focuses on geotechnical, tunnel, trenchless, and geological engineering and design services through innovative, collaborative, client focused consulting uniquely tailored to suit the needs of our clients and their projects. Together Lithos and GEI will better serve our communities and create smart, buildable solutions.
Lithos Engineering assisted the City of Loveland, Colorado with design and construction management of two new stormwater conveyance tunnels that connects two existing lakes. The tunnels were constructed using a guided auger boring methods through soft and wet clay with minimal cover.
Lithos Engineering Waterline Installation Using Horizontal Directional Drilling (HDD) - Crook, Colorado
This time lapse shows the overall construction of Lithos Engineering's Fossil Creek Pedestrian Tunnel, located in Fort Collins, Colorado.
Lithos Engineering staff provided design and construction management services for this 1,800 foot tunnel. The tunnel was constructed with an open face TBM and has a curve that was constructed to eliminate a central shaft. This video shows the hole through at the end of the project. After tunneling was complete, a steel carrier pipe was installed and grouted that will provide treated water to the City of Greeley.
Lithos Engineering provided design services and construction management for rockfall mitigation on Larimer County Road 31 in Northern Colorado.
This video shows an overview of construction of the Michigan Ditch Tunnel in Jackson County, Colorado. This was a curved, hard rock tunnel constructed with a Tunnel Boring Machine (TBM). The site is located at 10,500 feet and the two pass tunnel system was designed to convey water behind and below a large landslide that regularly disrupted water supply.
Lithos Engineering assisted Larimer County with design and construction management for a new stormwater tunnel under County Road 74E in Livermore, CO.
Lithos Engineering assisted Larimer County with design and construction management for an emergency landslide repair.
The Second Creek Interceptor project by Metro Water Recovery is 17.5 miles of new pipeline that will provide a regional solution to conveyance of wastewater in the northeastern portion of the Metro District’s service area, affecting over 2 million Coloradans and the largest transmission project in the Metro District’s 60-year history.
Construction for the project was initiated in 2021 and includes 20 tunnels under major roads, highways, and railroads. Tunneling methods involve microtunneling, guided auger boring, and hand mining up to 1,500 feet long.
