The Transportation Improvements Grow Wisconsin’s Economy: The Economic Benefits of Transportation Investments study describes the economic benefits that are correlated with transportation investments in Wisconsin, such as increasing the amount of appropriations for the Wisconsin State Trunk Highway System. The study suggests that if Wisconsin invested 21.9 billion (5.8 billion over the amount needed to maintain the current highway system), the state’s economy will experience several benefits. Benefits include the creation of 4,800 new jobs on an annual average basis, as well as an increase in Wisconsin residents disposable personal income.