image of department of transportation cast aluminum rails made by Alcast Company

Department of Transportation Aluminum Castings

Precision-Crafted Aluminum Castings for the Transportation Industry

With over 55 years of aluminum casting expertise, Alcast Company is a trusted name in delivering high-performance, U.S.-made castings for critical Department of Transportation (DOT) applications. As infrastructure demands evolve, we provide proven aluminum casting solutions that transportation systems across the country rely on for strength, reliability, and compliance.

At Alcast Company, we specialize in delivering transportation aluminum castings engineered for demanding environments. Whether it’s structural bridge components, traffic signal supports, EV infrastructure elements, or safety-critical rail components, our castings are designed to meet and exceed DOT specifications for durability, dimensional precision, and longevity.

The Role of Aluminum Castings in Transportation Infrastructure

In today’s transportation landscape, aluminum has become the material of choice for a wide range of DOT-related applications due to its lightweight strength, corrosion resistance, and superior lifecycle performance. Our aluminum foundry produces components used in:

  • Highway and bridge safety systems
  • Roadway lighting and signage structures
  • Electric vehicle charging station enclosures
  • Rail posts and commercial vehicle brackets
  • Structural supports for smart traffic systems
image of aluminum castings used in a bridge for the department of transportation

Each aluminum casting we produce for the transportation industry is built for resilience—able to endure exposure to harsh environmental conditions while reducing overall system weight and maintenance requirements.

image of a department of transportation design engineer and an Alcast engineer shaking hands

Why Alcast is the Right Choice for DOT Aluminum Castings

Our team brings decades of experience and a dedication to quality that sets us apart as a leading aluminum casting company for the transportation industry. Key advantages of working with Alcast Company include:

Structural Integrity That Withstands the Elements

Our permanent mold aluminum castings deliver exceptional strength-to-weight performance. With enhanced density and reduced porosity, our components provide consistent reliability under pressure.

Precision Engineering for Critical Applications

We offer in-house CNC machining to ensure exact tolerances and part repeatability, especially for mission-critical DOT projects. This gives you tight control over your supply chain and better end-use performance.

Cost-Effective, Scalable Solutions

From low-volume prototypes to large, full-scale production runs, our flexible aluminum casting production model meets your project demands—on time and within budget.

In-House Value-Added Services

To streamline your supply chain, Alcast Company provides comprehensive secondary processes including:

  • Heat treating
  • Powder coating
  • CNC machining
  • Custom tooling

Our in-house control leads to faster turnaround times, consistent quality and reliability from your aluminum casting partner that is second to none.

drawing of Mitchener Molding Machine

Our Proprietary Aluminum Casting Advantage: The Mitchener Molding Process

Unique to Alcast, the Mitchener Molding Process is our proprietary casting method developed to enhance mold filling and reduce porosity—resulting in castings with better mechanical properties and surface finishes.

This technology ensures superior consistency and quality, especially for transportation projects that demand durability and structural uniformity.

Engineering Support from Concept to Completion

Our experienced engineering team works directly with procurement managers, design engineers, and technical buyers to assist with:

  • Design for Manufacturability (DFM)
  • Alloy selection (including A356 for its superior strength and corrosion resistance)
  • Rapid prototyping
  • Compliance with DOT and government contract specifications

This partnership approach ensures every transportation component is designed and cast for maximum performance and manufacturability.

image of an engineer providing support for department of transportation aluminum castings

Certifications and Compliance

Alcast Company proudly operates under industry-leading quality standards. Our certifications include:

  • ISO 9001:2015
  • ITAR

We understand the regulatory landscape of DOT contracts and ensure full traceability, quality assurance, and documentation support on every order.  Whether your need is a rugged support structure for roadside safety or a lightweight rail bracket, Alcast has the casting capabilities to deliver.

A Legacy of Excellence in American Manufacturing

For over five decades, Alcast has earned the trust of manufacturers and government agencies alike. As a U.S.-based aluminum foundry, we understand the urgency, precision, and quality standards that transportation contracts demand.

We bring together skilled craftsmanship, innovative engineering support, proprietary technology, and responsive customer service to deliver high-quality aluminum castings that stand the test of time.

Contact Alcast Company Today

Ready to begin your next transportation aluminum castings project? Partner with a proven aluminum foundry that casts quality, reliability and expertise into every component we deliver.

Call now (309) 691-5513

Submit your RFQ or request an engineering consultation