We work to glorify God in everything we do. Therefore, honesty and integrity are held at the highest levels. Not because of who we are, but because of who God is and what he has done in us through Jesus Christ.

Silver Creek Agents

Cal Bolkema

image1Cal is the President of Silver Creek Commodities Inc and Silver Creek Crop Insurance based out of Davenport, IA. In May of 1986, he graduated from Dordt College in Sioux Center, Iowa with a Bachelor of Arts degrees in Agriculture Business and Animal Science. Cal has been helping Ag producers manage risk and operate profitably since 1989.  Cal services clients in IA, IL, NE, WY, CO, and MT.


Tyler Bolkema

IMG_3811Tyler is based out of Davenport, IA as a crop insurance specialist and Commodity Broker since 2010. In December of 2009 Tyler graduated from Colorado Christian University in Lakewood, CO with a Bachelor of Science degree in Business Administration. Tyler services clients in IA and IL.



Steve McNamara

DSCN1856Steve is based out of his home town of Greeley, Co. and has been a Crop Insurance Specialist with Silver Creek since 2009, servicing clients in CO, NE, WY, and MT. Steve has been a business owner in Greeley for over 30 years, and brings his business experience to the agricultural community in the form of applying sound businesses practices to risk management. He & his wife Debbie have raised 5 children in Greeley and now have 15 grandchildren. Steve spends his time enjoying weekends at his cabin in WY mixed with hunting, snowmobiling , hiking, as well as running a few marathons a year with Debbie.


Troy Rasmussen


Troy is based out of Rock Falls, IL and services clients in Illinois.  He graduated from Western Illinois University in 1989 with a Bachelors Degree in Agri-Business and was raised on a livestock/grain farm in northwestern Illinois.  He has managed fertilizer plants and grain elevators and moved into the risk management field in 2006 and has been a commodity broker and crop insurance agent since.  He spends his time with his wife and 2 kids while enjoying outdoor sports like running, cycling, and hiking.


Duane Lowry

Duane is based out of Maynard, IA and services clients in Iowa. He has been involved in ag business and the futures industry since 1978. From an assistant manager at a large Iowa cooperative to a floor trader and broker in Chicago, Duane has worked with producers and grain elevators to manage futures, basis and spread risk. Duane has been writing daily market commentary since 1987 and currently works directly with producers to market their grain, manage risk and optimize their crop insurance decisions. Duane’ deep experience with basis, spreads and market analysis sets him apart as a crop insurance agent and risk management consultant, helping him to optimize producer marketing decisions.


5705 Wisconsin Ave. Davenport, IA 52806

844-445-7925 Toll Free

563-445-0596 Office

563-445-7920 Fax