Find engineering consulting firms by capability and location.

All-Terra Engineering, Inc. is a full-service construction materials testing (CMT) and geotechnical engineering laboratory based in Houston, Texas, founded in 2006 by President Haddis Tewolde, P.E. Backed by a senior team with more than 50 years of combined experience, All-Terra operates an A2LA-accredited laboratory and serves public agencies, developers, contractors, and universities across the Greater Houston area. Core services include construction materials testing, geotechnical engineering, and forensic evaluation of concrete.

Service detail: Construction Materials Testing (CMT)

Partnering to Build & Protect What Matters Most

Project: ADOT I-10 Tucson Reconstruction

Critical investigations, testing, analysis, and design for a more certain world

Project: Minnesota Zoo Treetop Trail

Building a Better Texas

Project: US 77 Geotechnical Investigation

Geotechnical and environmental engineering solutions that balance cost and risk.

Service detail: Geotechnical Engineering

Bob Taylor Engineering, Inc. (BTE) is a Lexington Park, Maryland-based geotechnical engineering and construction materials testing firm. Founded in 1981, BTE delivers construction inspection and testing services for concrete, soils, asphalt, and aggregate. BTE maintains an accredited laboratory and a certified technical staff holding ACI, MARTCP, AASHTO, ASTM, and MDE credentials, and serves transportation, highway, airfield, and public-sector clients across southern Maryland.

Project: Lead Coffin Crypt Project at Historic St. Mary's City

Technical Expertise for Tough Challenges

Project: Harrah's Cherokee Casino Expansions

No Slogan… Just Results

Project: Herbert Hoover Dike

Founded in 1986, Despiau Associates Corp. is a San Juan, Puerto Rico geotechnical engineering practice and soil/geotechnical engineering laboratory. Since its founding, it has delivered foundation design, geotechnical investigation, materials testing, and construction inspection across more than 6,500 public and private projects throughout Puerto Rico, including Vieques and Culebra. Direct involvement in foundation supervision, analysis, and design spans more than 3,000 projects - roads, bridges, schools, parking facilities, residential and multi-story buildings, industrial facilities, and pharmaceutical plants. Alongside core geotechnical services, the practice offers environmental soil and groundwater characterization and forensic engineering and expert witness support for financial institutions, insurance companies, attorneys, and developers. Industries served include pharmaceutical, commercial, manufacturing, retail, waste management, and state, federal, and municipal government.

Service detail: Geotechnical Engineering Services

Design, Build, and Sustain a Better World

Project: West Valley Demonstration Project

Local Experience, Local Team, Locally Focused

Project: Old Dominion University

Where Experience Meets Innovation

Service detail: Geotechnical Exploration & Laboratory Testing

Technical Flooring Consulting & Concrete Testing

Project: Fort Belvoir Community Hospital Flooring Evaluation

Dedicated to Providing Smart Geotechnical Solutions for Our Communities and Our Planet

Project: Scriber Lake Park Boardwalk

Hollatz Engineering, Inc. (formerly Wilson Engineering, founded 1985) provides third-party construction administration, inspection, special inspection, and materials testing services for civil and building projects in Juneau and Southeast Alaska. With over 35 years of experience and involvement in more than $400 million of construction projects, Hollatz Engineering has supported roads, bridges, airport facilities, marine infrastructure, water and sewer systems, and public buildings throughout the region.

Project: Columbia Blvd, Poplar Ave, and Mendenhall Blvd Reconstruction

Strategic Engineering Solutions that Exceed Expectations

Service detail: Geotechnical Engineering

Engineering to a Better World

Project: San Joaquin River Restoration Program

Polymer Nanocomposites Technology Designed for Extreme Environments

Project: Novel In-Situ Ablation and Thermal Sensing Technology

Over 60 Years of Engineering Excellence.

Service detail: Land Surveying & Mapping

Specializing in structural engineering, parking consultation, and construction materials inspection

Project: Fulton Street Transit Center

Pacific Crest Engineering Inc. (PCEI) provides geotechnical, chemical process, and environmental engineering services to public and private sector clients in the Monterey Bay and Silicon Valley areas of California. It specializes in geotechnical investigations, materials testing, stormwater management, environmental consulting, and fire protection engineering.

Project: Kresge College, UCSC

Phoenix Testing & Inspection LLC (PTI) is a construction materials testing, special inspections, geotechnical engineering, and environmental services firm founded in 2001 and based in Tempe, AZ. PTI is a local family-owned company holding AASHTO laboratory accreditation and WBENC Women's Business Enterprise certification (WBE2300562). It provides geotechnical services, construction and special structural inspections, materials testing, and Phase I and Phase II environmental site assessments to residential home builders, commercial developers, contractors, government agencies, and public and private utilities throughout Arizona. PTI has completed services on more than 1,500 projects ranging from single-family residences to large industrial complexes.

Service detail: Geotechnical Engineering

SEECO Consultants, Inc. provides civil, geotechnical, and structural engineering, alongside environmental consulting and construction materials testing, throughout the Midwest. Established in 1970, the practice operates with its affiliates, SEECO Environmental Services and SEECO Construction Services, to deliver comprehensive engineering capabilities under a unified management system. It maintains testing laboratories approved by regional and federal authorities, including the Illinois Department of Transportation and the U.S. Army Corps of Engineers.

Service detail: Civil Engineering

Trusted Expertise, From the Ground Up

Project: One World Trade Center