Heavy snow fall has a heavy impact on Michigan’s economy, according to a new study. The IHS Global Insight Study says snowstorms cost the state $250 million a day in lost economic opportunity for each day the roads are impassable. It says unplowed, slippery roads hamper business productivity because workers are unable to get to work, shipments and materials are slowed, and retail sails and resulting sales taxes fall as consumers stay home. The study also found that hourly workers are hurt the most, accounting for about two-thirds of the direct economic impact of the snowstorm. Director of Legislative Affairs for the Michigan Infrastructure of Transportation Association, Keith Ledbetter says the study demonstrates the futility in cutting transportation dollars while trying to jump-start our economy. He says our transportation system is directly tied to Michigan’s economic success. (MRN)