Geotechnical Engineering Services

Yeh & Associates offers a wide variety of Geotechnical Engineering Services. Read below for specific information regarding our different Geotechnical Services


The most appropriate foundation system should be selected based on geotechnical, geologic and groundwater conditions, lateral and vertical load demands, and construction considerations. Our expertise in foundation systems includes spread footings, mats, driven piles, drilled shafts, micropiles, post-tensioned slab and composite systems that incorporate deep foundations with ground anchors.

Geotechnical Site Investigations

Yeh provides site investigations to evaluate subsurface characteristics. To read more about our work at Red Rocks Amphitheater in Morrison, Colorado, click here.

Retaining Wall Design

The Yeh staff has expertise in the most current retaining wall design practices.


Landslide Mitigation

Yeh and Associates is a national leader in geologic hazard assessment. Our experience includes rockfall, debris and mud flows, avalanches, collapsible soils, sensitive and swelling clays, and mining hazards and subsidence.

Yeh staff evaluates, designs and provides construction support of rockfall attenuator systems, rockfall barrier systems, and draped mesh systems to mitigate rockfall.




Yeh and Associates has provided engineering and management services on nearly all of the highway tunnels in the state of Colorado. Our personnel serve on several national committees focused on tunneling and underground structures.

With this experience, we are able to provide clients with a full range of tunnel engineering services including feasibility studies, route selection, assessment of local geology, geotechnical and geological investigations, management consulting, preliminary and final design, and construction engineering. To read more about our work with the Twin Tunnels in Colorado, click here.


Pavement Design

Pavement design recommendations are provided for review and compliance with the local governing agency. Localized areas of poor subgrade that have been identified receive specific recommendations including over excavation and replacement with select material and/or chemical stabilization.