303rd Engineering Group, LLC
St. Louis, MOSuccessful Partnerships, Successful Projects
Project: Airmen's Dormitories, Scott Air Force Base
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Successful Partnerships, Successful Projects
Project: Airmen's Dormitories, Scott Air Force Base

Providing Quality Services for Over 30 Years
Project: Cumberland Levee Repair at Lake Texoma

Civil & Structural Engineering, Design Services, General Contracting, and Construction Management
Project: Washington Avenue Streetscape Project
Founded in 1950, Alper Audi, Inc. is a St. Louis-based structural engineering practice with engineers registered in more than 45 states. It serves architects, contractors, developers, owners, and government clients across commercial, industrial, institutional, and public markets. More than 50 percent of assignments are delivered on a design-build basis, and annual project volume contributes to more than $2.5 billion in aggregate construction value.
Project: Forsyth Pointe
Building Relationships through Affordable Engineering Excellence
Service detail: Mechanical Engineering
Leaders in structural engineering
Project: ICL Group Chemical Processing Building
Advanced Automation & Control Systems for Critical Infrastructure
Service detail: Building Automation Systems
Basilico Engineering, Inc. is a professional engineering firm in the St. Louis, Missouri area, incorporated in November 2000. It specializes in Civil, Environmental, and Geotechnical Engineering and also provides Material Testing and Construction Inspection services. Basilico Engineering serves public agencies and private clients throughout the St. Louis region and maintains relationships with area universities including UMR, SIUE, and Washington University.

Tomorrow's Design Since 1909
Project: Osprey Maintenance Hangars

Expert. Trusted Advisor. Friend.
Project: I-270 North Design-Build
National Architecture, Engineering, and Interior Design
Project: CD Companies Headquarters Remodel

Engineering a better way.
Project: Cedar Rapids Reach 1 Flood Protection

We Own It.
Service detail: Civil Engineering

Quality Infrastructure. Passionate People. Stronger Communities.
Project: Central District Pedestrian Improvements

Engineering Excellence for a Sustainable Future.
Service detail: Testing, Adjusting and Balancing
Full Service Civil Engineering, Construction, and Architectural Firm
Project: Walgreens

Experts Responsive Solutions
Service detail: Fire Protection and Life Safety

Problem solved.
Project: TxDOT Statewide ADA Transition Plan

Aquatics for Life
Project: O'Neil Park Pool

Elevating infrastructure, together.
Project: Riverside Drive Riverfront Redevelopment
Custom Engineering is an MEP engineering firm founded in 1974 and headquartered in Independence, Missouri. It provides mechanical, plumbing, electrical, lighting, BIM, and commissioning design services for commercial, industrial, and institutional facilities nationwide, licensed in 39 states plus the District of Columbia. Custom Engineering has recently aligned with Timberlake Engineering and TIE Consulting to offer an integrated MEP plus low-voltage design approach. Clients include architects, owners, and construction managers across healthcare, education, government, industrial, and commercial sectors.
Service detail: Mechanical/Plumbing Design

Exceptional Engineering. Innovative Construction Services. Dedicated to Our People.
Project: Jefferson National Expansion Memorial - Gateway Arch Grounds Renovations

We Know Railroad
Project: Progress Rail Mayfield KY

Commitment, Collaboration, Cooperation
Project: Dry Weather Sewer Relief: Outfall 055