The Rhode Island Turnpike and Bridge Authority has helped raise more than $1 million since 2011 for local charities through its popular Pell Bridge Run and two other events. But with it has come questions about authority assets being used to promote and runs the events, high operating costs and where the donations are going. This week, Jim Hummel sits down with a longtime critic of the authority who has been trying for years to get answers, and with the authority’s executive director, who is also helping run a foundation created to oversee the events.