Membership Directory

Graves Construction Co., Inc.

Graves Construction Co., Inc., founded in 1920 has primarily built bridges and concrete box culverts mainly in Iowa, South Dakota, Minnesota and Nebraska. Recently branched out into the Commercial Construction. Reputation of excellence and safety in its construction practices throughout the Midwest. Family owned and operated.

Greiner Construction

Staff

• Miltenberger, Josh - Chief Operating Officer

Grimes Asphalt and Paving Corporation

Grimes Asphalt and Paving Corporation was founded in 1972 and is based in Des Moines, Iowa. Grimes Asphalt and Paving is in an optimum position to serve our clients with the latest technology in equipment and high-capacity asphalt plants to service all of Central Iowa and Northeast Nebraska. Our experienced employees will ensure a safe, efficient, and quality project. Our Des Moines, Iowa, asphalt paving company offers expertise in producing and paving hot mix asphalt. Making us your one-stop in paving construction.

Staff

• Yonker, Matt - General Manager
• Yonker, Mike - General Manager

Grosse Steel Co., Inc.

Staff

• Grosse, Robert - Founder & President
• Grosse, Shane - Owner & Vice President

GTG Construction

At GTG Construction & Architects, we specialize in providing comprehensive design and construction solutions that seamlessly integrate architectural creativity with construction expertise. As a trusted partner in creating spaces that inspire and perform, we take pride in delivering projects that balance aesthetic appeal, functionality, and efficiency. Our collaborative approach ensures that every project reflects our clients' unique vision while meeting the highest standards of quality. From initial concept to final construction, we are committed to transforming ideas into exceptional spaces tailored to the needs of each client.

Staff

• Reynolds, Jessica - Owner

Hanna Plumbing & Heating, Inc.

Staff

• Hanna, Tim - Manager/Owner

Harger's Acoustics, Inc.

Harger's Acoustics, Inc. specializes in acoustical and specialty ceilings and wall panels. We have been in business for 47 years. Many of our employees have been with the company for over 25 years. We take great pride in the work we do and strive to make every customer happy.

Staff

• Zbanek, Kelly - President

Hart-Hammer Inc.

Hart-Hammer Inc is an Iowa based company with offices in Des Moines and Davenport. We are a manufacturer's representative for approximately 30 companies, offering engineering support for the HVAC products. Our customer base is Iowa, Nebraska, and Western Illinois.

Staff

• Hart, Kevin - President
• Hammer, Jeff - Vice President
• Happel, Renee - VP-AD

Hawkeye Paving Corporation

Hawkeye Paving Corp is a heavy highway contractor with expertise in concrete paving, patching, bridge deck overlays, bridge approaches, underground utilities, excavation and demolition. Family owned and established in 1983.

Staff

• Perkins, Beau - Owner

Hawkeye Ready Mix, Inc.

Hawkeye Ready Mix Inc is a ready mix concrete producer serving primarily Linn and Johnson County. We also produce miscellaneous precast items, sills, curbs, bunker and retaining wall blocks, etc.

Staff

• Sauter, James - President
• Becker, Jim - Location Manager
• King, Jarod - Location Manager