Big Dig comparisons are common with respect to this project, but it&#x27;s worth noting that the Big Dig improved traffic flow.  The SR99 tunnel is worse than the status quo, with fewer lanes and fewer downtown exits.  This means that a <i>successful</i> tunnel project means more gridlock, more pollution, and more wasted time.<p>Our local and state transportation authorities have a political agenda, and transportation is very low on it.