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The <\/span><\/span><\/span><\/span><\/span><\/span>Green Line Extension transit project<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/a>, which was decades in the making, wrapped in December 2022 with the opening of the 3.7-mile Medford Branch. The earlier portion of the GLX project from Union Square to Somerville was finished in March 2022. GLX Constructors built both parts of the 4.7-mile extension under a design-build contract, and the lawsuit concerns the overall project.<\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n STV was responsible for preparing preliminary design drawings that GLX Constructors submitted as part of its bid proposal in 2016, and that were used to calculate the cost of the project, the lawsuit claims.\u00a0<\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n \u201cSTV also understood that any post-award changes to the Ready for Estimate Drawings could change the quantities and nature of the materials GLX Constructors had included in its price proposal, which, in turn would increase the costs of constructing the GLX project, and that such increased costs would not be paid by the MBTA,\u201d the complaint reads.<\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n MBTA was very concerned about cost overruns, and the agency was absolved of paying for these cost overruns in its 2017 teaming agreement with the JV, according to the suit.<\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n However, STV\u2019s preliminary designs contained \u201cnumerous and significant errors and omissions,\u201d which resulted in substantial cost overruns that GLX Constructors could not recover from the MBTA, the complaint said. The document cites 10 instances where errors in the design drawings later necessitated costly corrections, such as designs for ballast retaining walls on the Medford Branch that were much less extensive than required.\u00a0<\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n STV agreed that it would be \u201cresponsible for costs and damages incurred [by GLX Constructors] as a result of errors in such quantities caused by the failure of [STV] to comply with the standards of skill and care\u201d laid out in the 2017 teaming agreement with the other members of the JV, according to the lawsuit. However, GLX Constructors alleges STV did not reimburse it for the cost overruns as promised.\u00a0<\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n For its part, STV\u00a0said it is proud of its contributions to the project and stands by its design.<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n \u201cWe are confident that these commercial disputes will be resolved in STV\u2019s favor through the judicial process,\u201d an STV spokesperson told Construction Dive via email.<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n<\/p><\/div>\n