"University of Pennsylvania economist Robert Inman (working from numbers developed by Brown University's Brian Knight) estimated that 40 cents out of every dollar spent in federal highway grants is deadweight loss, or waste."
http://www.realclearpolicy.com/blog/2016/02/25/how_federal_cash_harms_state_governance_1566.html
http://www.realclearpolicy.com/blog/2016/02/25/how_federal_cash_harms_state_governance_1566.html