About Asphalt Materials

We understand the importance of
 innovation and collaboration.

Asphalt Materials, Inc., formed in 1957, has been continually focused on the asphalt business. A core strength of our business is the formulation, manufacturing, and R&D of asphalt binders and emulsions. Our Asphalt Companies continually supply high-quality products and services around the United States, allowing us to excel in pavement preservation techniques and construction services.

We work closely with the Heritage Research Group team to ensure the highest quality asphalt materials and processes are brought to market. We are committed to building long-term relationships and mutual trust. We are excited to tackle our industry’s biggest challenges, looking for new and inventive ways to create solutions that will mean better, safer, and longer-lasting roads.
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WE BELIEVE IN OUR PEOPLE

They are what make our company a great place to work and grow.

SAFETY

Through communication, education and prevention, we accomplish our goal of getting our employees and associates home safely at the end of the day. We are family and safety is everyone’s responsibility.

FAMILY

Since the beginning, AMI has believed in the power of family. We’ve made a consistent effort to provide the highest level of commitment in all that we do. From developing our asphalt products, how we treat our customers and how we choose our team, we rely on each other.

DIVERSITY

At AMI we welcome people from all different backgrounds. By embracing a respectful, inclusive, and diverse workplace, we foster an environment that is built to celebrate the individuality each person brings to the team.

Our People

From our humble beginnings in 1957 we have created a culture of diversity and inclusiveness. At AMI we respect and honor each and every one of our employees. We are a big team with family values and are driven to be the best team in asphalt. We deliver quality and lasting value by building relationships. We help create longer lasting, safer roads with quality, reliable asphalt materials. We are a team of committed, collaborative people that tackle our industry’s biggest challenges. Here are some of their stories!
March 12, 2025

Boots on the Ground: Building Long-Lasting Pavement

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February 19, 2025

Applauding Our Values-Driven Team  

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September 6, 2024

Veteran Spotlight: Julie Mackey’s Journey from Military Service to a Fulfilling Career at AMI

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August 28, 2024

Embracing Innovation Through Plant Automation

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OUR HISTORY

The Story of Our Company

The story of AMI begins as a family business in 1957. Today the company continues to grow and expand our locations and commitment to the asphalt business across the Midwest and beyond. We are a proud member of The Heritage Group which began in 1930. We work closely with The Heritage Research Lab on new and innovative asphalt materials, technologies and sustainability initiatives. 

The Beginning

Asphalt Materials was sold to Dick Stephenson and Fred Fehsenfeld Sr. from Seneca Petroleum
1957

Expansion

Asphalt Materials expanded operations in 1964 when we opened our Marietta, OH plant.
1964

Ohio Growth

The Oregon plant was then built in 1976, adding to the ever growing Asphalt Materials family.
1976

E-Town, KY

After leasing a plant in Louisville, KY for several years, AMI decided to build the plant at Elizabethtown.
1983

Emulsicoat, Inc.

With expansion mode in full swing, Emulsicoat was established at Urbana, IL.
1985

Laketon Refining Corp.

Laketon Refining was added to the fold in northern Indiana.
1986

Bituminous Materials

1990 brought Bituminous Materials and Supply into the portfolio. Consisting of plants in Tama, IA and Algona, IA.
1990

Des Moines, IA

In 1992 the Des Moines, IA plant was leased from Elf Asphalt, which was sold to Koch Materials, then to Asphalt Materials.
1992

Millsap, TX

EAP built a plant at Millsap, TX in 1994. The joint venture was dissolved in 1996 and AMI acquired the Millsap plant.
1994

Trading Plants

We exchanged the Millsap, TX and Algona, IA plant with Koch for Marietta, OH, Des Moines, IA and Lawrenceville, IL.
1996

Rayland, OH

A deal was made for the lease of emulsion plant Rayland, OH. This brings us to a total of 13 facilities.
1997

Zibo, China

A plant in Zibo, China southeast of Beijing was the Group's first ``capital`` project built in a foreign country.
1999

HG Meigs

With 3 terminals in Portage, Abbotsford and Eau Claire, WI- HG Meigs was established in 1935, joining AMI in 2019.
2019

Tri-State Asphalt

Tri-State Asphalt was added into the fold, with over 35 years of experience in asphalt emulsion manufacturing.
2019

Emulsicoat, Inc

AMI announced the acquisition of three asphalt terminals to further expand capabilities in the IN and IL markets.
2020

HERITAGE RESEARCH GROUP

Solving Big Problems By Leveraging Research and Development

Founded in 1980, Heritage Research Group stands at the forefront of innovation, tackling tough problems and turning big challenges into even bigger opportunities. We encourage a culture of independent, entrepreneurial thinking and prolific exploration. Our team of scientists and engineers use cutting-edge technology and inventive problem-solving to create enduring value.

 Today, our labs provide innovative products, processes, and training to create longer lasting, safer roads. We constantly seek new and inventive solutions by working closely with our customers and partners.

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