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Excellence in Every Mix

Quality Materials Built on Decades of Expertise

Quality isn’t just a standard at West Contracting—it’s our foundation. Since 1956, we’ve been developing and refining our asphalt products to meet the evolving needs of our communities and customers. Behind every ton of material stands our dedicated team of professionals who bring generations of experience and commitment that shows in every project we touch.

Our Asphalt Products

Plant Mix Asphalt

The heart of our operation lies in our four family-operated asphalt plants, where quality control happens in real-time. Our on-site laboratories allow us to:

  • Monitor production continuously
  • Respond rapidly to customer needs
  • Ensure consistent quality across all projects

By incorporating Recycled Asphalt Pavement (RAP), Engineered Crumb Rubber (ECR), and Warm Mix Asphalt Technology (WMA) in our mix designs, we’re able to deliver materials that perform better while doing better for our environment

Cold Mix Asphalt

West Contracting proudly partners with Unique Paving Materials (UPM®) as the only certified producer of UPM® in the St. Louis Region. This specialized cold mix material enables timely and cost-effective pothole repairs throughout St. Louis and Missouri, preserving smoother, safer drives on roads and highways.Available in convenient 50lb bags or by the ton, our cold mix solutions provide the flexibility you need for maintenance projects of any size.

Looking for pricing, or ready to schedule your order?

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efficient and economic asphalt plants

Asphalt Plant Locations

Location:
3105 Highway FF
Bourbon, MO 65441

Mix Sales:
(314) 962-3145

Plant:
(573) 732-5397

Location:
1591 Thornton Road
Pacific, MO 63069

Mix Sales:
(314) 962-3145

Plant:
(636) 257-6625

Location:
5251 Hillsboro House Springs Rd.
House Springs, MO 63051

Mix Sales:
(314) 962-3145

Plant:
(636) 375-3223

Location:
831 W Gravois Ave.
St.Clair, MO 63077

Mix Sales:
(314) 962-3145

Plant:
(636) 629-6566

Location:
18637 US Highway 66
Pacific, MO 63069

UPM Sales:
(314) 962-3145

Phone:
1-(314) 962-3145

Our Quality Commitment

The West difference begins with our ability to design our mixes in-house. 

This capability allows us to adapt quickly to provide asphalt mixtures that are not only cost-effective but built to endure the challenges of our region’s climate and traffic demands.

We believe that innovation and sustainability go hand in hand. That’s why we’ve incorporated forward-thinking approaches like:

  • Recycled Asphalt Pavement (RAP) – Reducing waste while maintaining quality
  • Ground Tire Rubber (GTR) – Enhancing performance while keeping tires out of landfills
  • Warm Mix Asphalt Technology (WMA) – Reducing energy consumption and emissions

These innovations allow us to keep costs competitive, improve workability for our customers, and reduce environmental impact—a win for everyone in our community.

On-Site Quality Control Laboratories

Our in-house laboratories are more than facilities—they’re where innovation meets craftsmanship. Each of our asphalt plants features on-site quality control laboratories that allow our experienced team to:

  • Continuously monitor production quality
  • Rapidly respond to customer specifications
  • Ensure consistency from batch to batch
  • Adapt quickly to changing project requirements

This hands-on approach means we can provide cost-effective, durable asphalt mixtures that meet even the most rigorous specifications while maintaining the personal service that’s been our hallmark for over six decades.

Testing Laboratory Headquarters

Built in 2006, our state-of-the-art Testing Laboratory represents our ongoing commitment to quality and innovation. This facility houses our expanding inventory of mix design and quality control equipment while providing offices for our quality control team and MoDOT partners.

West Contracting’s laboratories are fully equipped for all asphalt mix design and testing requirements. We participate in the AASHTO Materials Reference Laboratory (AMRL) Proficiency Sample Program, enabling rapid approval of mix designs and ensuring our materials meet or exceed industry standards.

Our testing laboratories are currently approved for these essential programs:

  • Hot-Mix Gyratory Mix Design
  • Coarse Aggregate
  • Fine Aggregate
  • Hot-Mix Ignition Oven
  • Hot-Mix Marshal Mix Design

Material Calculator


Asphalt and UPM Calculator

Featured Projects

Looking for pricing, or ready to schedule your order?

Our team is ready to understand your project needs and provide solutions that meet your timeline and budget. With convenient locations serving the St. Louis area and East Central Missouri, we’re always nearby to support your project with both quality materials and experienced guidance. 

Get in Touch