Estimators/Sales Team


General Manager

Joel Gryp was hired in May of 1999 and currently serves as the General Manager.  He spends the majority of his time working on DOT, County and Municipal road contracts for the Cedar Rapids/Marion area. When he’s not working, Joel can be found at one of his kids’ ball games or on the golf course.

DeWayne Heintz  E.I., C.E.T.

Estimator/Project Manager

DeWayne was hired in the spring of 2004 and has been in the asphalt industry since 1976. He is currently an Estimator/Project Manager for Cedar Rapids and the surrounding area. DeWayne graduated from Iowa State University for Civil Engineering and previously worked for his father’s company, Cedar Valley Asphalt, until it was sold to LL Pelling.  He enjoys his Harley and several athletic pursuits in his free time.

Barry Rhinehart  C.E.T.

Estimator/IT Manager

Barry Rhinehart was hired in 1996 as a shop hand and laborer. He serves as an Estimator for the Iowa City, Coralville and surrounding areas.  Barry also supports all IT infrastructure and software-related systems for the company.  Outside of work, Barry enjoys watching the Hawkeyes and spending time with his son.

Project Manager/Estimator

Sheldon was hired in the summer of 2016. He serves as a Project Manager and Estimator for the Iowa City/Coralville area. In his free time, Sheldon enjoys golfing, hunting, and watching the Hawkeyes.

Chip Sealcoat Estimator/Supervisor

Bob Donohoe was hired in 1985 as a laborer on an asphalt crew. He has also worked at the oil plant driving a distributor from 1986 to 1995. In his current position, Bob serves as a Sealcoat Estimator and Foreman.

Chip Sealcoat Estimator

Greg, a new addition to the team in 2013, was born and raised in a family aggregate production business. He was officially introduced to street maintenance work in 1987 and has held many positions including: dump truck driver, chip spreader operator, and road grader operator. Outside of work Greg’s passion is riding his Harley especially over new asphalt! He also loves spending time with his friends, family, and new grandson.

Chip Sealcoat Estimator

Darrin was hired in April 2008 as a driver for our Oil Plant. In 2013, he was promoted to a chip sealcoat estimator. Darrin lives in Millersburg with his wife and daughters.

Painting Division Manager

Marianne Wainwright has worked in the asphalt industry since 1987, moving to the painting division in 2006. She works primarily in Eastern Iowa bidding jobs and scheduling painting crews for roadway and parking lot work.