Mon - Fri 8:00 AM - 5:00 PM


2101 E. Missouri Avenue, Suite B, El Paso, TX 79903



We provide professional geotechnical engineering services. Some of the studies that we perform include:

  • Airfield Pavement Design
  • Earth Retention System Design
  • Forensics Studies
  • Foundation Failure Analysis
  • Foundation Studies
  • Pavement System Design
  • Roadway & Bridge Foundation Design
  • Roadway System Design
  • Slope Stability
  • Soil Stabilization and Remediation
  • Water Distribution & Wastewater Treatment Facilities
  • Phase I & II – Environmental Site Assessments
  • Soil and Groundwater Contaminant Investigations
  • Soil-Gas Investigations and Vapor Intrusion Assessments
  • Groundwater Monitoring
  • Radon Gas Site Assessments

Our exploration services provide an accurate subsurface analysis to determine the efficacy of your project. Some of the tests we provide include: 

  • Subsurface exploration to define the soil stratigraphy and to characterize it based on its mechanical and index properties. We use a standard penetration test (SPT) equipment with a truck-mounted CME-75 drill rig.
  • Characterization of the permeability properties (k-value) on-site by the percolation test method.
  • Characterization of the electrical resistivity properties of subsurface soils for further correlation of the in-situ density and moisture conditions. 
  • Measurement of shear-wave velocity soil values (Vs) to provide an indication of the strength parameters and physical properties of subsurface materials.

Inspections/ Quality Control
Inspections/ Quality Control

We provide construction observation, construction quality control services, and construction inspection services. These include:

  • Concrete Mix Design and Production Monitoring
  • Earthwork Monitoring and Soil Compaction Testing
  • Non-destructive Testing Programs
  • Pavement Management Programs
  • Physical and Mechanical Testing of Freshly Mixed and Hardened Concrete
  • Precast Concrete Inspection
  • Special Construction Inspection
  • Structural Steel and Welding Tests
Construction Materials Testing (CMT)
Construction Materials Testing (CMT)

Our field and laboratory technicians have received training in concrete, asphalt and soils testing. Our technicians are also experienced in concrete and asphalt coring, as well as floor flatness/levelness, and pavement straight-edge verification. Some of the tests that we regularly perform include the following:

  • Atterberg limits
  • California Bearing Ratio (CBR)
  • Concrete flexural strength
  • Concrete, mortar and grout compressive strength
  • Grain size distribution
  • Hot-mix asphalt concrete (HMAC) Marshall Flow and Stability
  • Mix designs
  • Moisture-density relationship determination
  • Natural moisture content
  • Oil content determination in HMAC
  • Organic matter content
  • Permeability of fine-grained soils
  • Swell and shrinkage tests
  • Unconfined strength of fine-grained soils
  • Unit weight
LOI ENGINEERS has worked with clients in a variety of industries. We understand the different challenges and necessary requirements expected for each. Our experienced team allows us to provide the best services available tailored to the needs of your project.

Our Commitment: High Quality




LOI ENGINEERS has been involved in all phases of construction for the surrounding school districts in our region. We have overseen all stages from new construction to facility improvements. Our range of services for the school districts include environmental and geotechnical engineering services and construction quality control testing. LOI ENGINEERS is dedicated to providing the best services to ensure a stable foundation for the youth of our community.



LOI ENGINEERS has vast experience in providing excellent services for health facilities. Our involvement ranges from quality control to geotechnical analysis. Our team of licensed engineers have vast experience in directing health care facility projects to completion. Some of our success stories include: Child Crisis Center, New Johnsen Animal Hospital, University Medical Center, and complex urgent care facilities.



LOI ENGINEERS has played an important role in warehouse site developments from site assessments to the completion of the warehouse construction. Our diverse team has successfully completed projects from warehouses – like the SDI in Cd. Juarez, Mexico – to dealerships – Poe Toyota, El Paso, Texas.


Commercial/ Residential

The staff at LOI ENGINEERS have extensive experience in residential projects. Our firm was instrumental in the development of several residential complexes in the El Paso region such as: Cumbre Estates, HACEP Harry S. Truman Memorial Complex, Montecillo Subdivisions, River Run Heritage Farms, and Sereno Valley Estates.

However, our scope is not limited to residential projects. We have also provided geotechnical and CMT services to corporations such as Fred Loya, I-Fly, Panda Self Storage, and Top Golf in the El Paso region.



Our experienced team has acquired validation from the U.S. Army Corps of Engineers for concrete, asphalt, and soils testing. This has allowed us to expand our scope of expertise and provide essential services for the United States Department of Defense. Our proximity to the Fort Bliss Military Base makes us an ideal partner to ensure the successful completion of federal projects.