This study evaluated transportation changes affecting the grain industry relative to impact on the road system. Present and proposed railline abandonment, grain sub-terminal construction, and general modal traffic patterns were determined. Causal variables were incorporated into a general framework for continual monitoring of the industry. While it does not appear the state highway system is receiving large overall negative impact, "pockets of potential problems" are being caused by grain transportation changes. Most identifiable impacts are being felt on county and local roads. The final grain industry structure has not yet evolved. Monitoring of the grain industry during this evolution should include on-farm storage, age of elevators, mergers and consolidations and potential railline abandonments.