... this one isn't true anymore, thanks to Voters Count!
From the Sunday Globe editorial page: "The Patrick Administration is pushing ahead with a costly and unfair policy by imposing a project labor agreement on the $260 million reconstruction of the Longfellow Bridge. Its rationale for falls far short of justifying a union-workers-only pact that would put upward pressure on the project price, while effectively excluding the state’s many non-union construction workers and firms from the project.

...Restricting competition in that manner carries a cost. A study of Massachusetts school construction projects by the Beacon Hill Institute, Suffolk University’s market-oriented think tank, estimated that PLAs added 12 percent to construction costs. (Institute studies of school construction in Connecticut and New York found that PLAs led to even larger increases in bids or actual construction costs). Even if the effect were only half that, it would mean an extra $60 million for these two projects. The state can’t afford to pay that kind of pointless premium. The Patrick administration should reverse this decision."