Green Line preliminary engineering and design contract: $24.5 million

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Boston Globe: $1b extension passes key milestone”
At the Aug. 11 meeting of MassDOT’s board of directors, Mullan and the project team will seek approval for a $24.5 million contract to cover the preliminary engineering and design of the route, stations, and a related maintenance facility. That preliminary work will allow the state to seek one bid for combined design-build, meaning a single design and construction team will eventually bid on the whole project, instead of the potentially longer and costlier process of bidding and completing design, then bidding and completing construction.