▁at ▁, ▁, ▁, ▁and ▁. ▁ ▁Several ▁miles ▁of ▁Low ell ▁Line ▁tracks ▁will ▁be ▁re located ▁and ▁retain ing ▁and ▁noise ▁ab at ement ▁walls ▁constructed ▁to ▁make ▁way ▁for ▁the ▁Green ▁Line ▁tracks , ▁as ▁well ▁as ▁more ▁bridge , ▁signal , ▁and ▁utility ▁work . ▁The ▁state ▁int ends ▁to ▁seek ▁$ 5 5 7 ▁million ▁in ▁federal ▁New ▁St arts ▁money ▁for ▁Ph ases ▁ 3 ▁and ▁ 4 . ▁Some ▁of ▁this ▁work ▁was ▁under way ▁as ▁of ▁October ▁ 2 0 1 7 . ▁▁ 2 0 1 6 ▁re vised ▁plan ▁ ▁On ▁May ▁ 9 , ▁ 2 0 1 6 , ▁the ▁GL X ▁Inter im ▁Project ▁Management ▁Team ▁submitted ▁a ▁report ▁out lin ing ▁a ▁red es igned ▁project ▁to ▁the ▁Mass D OT ▁Board ▁of ▁Direct ors ▁and ▁the ▁MB TA ▁F is cal ▁& ▁Management ▁Control ▁Board , ▁which ▁then ▁voted ▁to ▁‘ support ▁adv ancing ▁the ▁Green ▁Line ▁Ext ension ▁Project ▁( “ GL X ▁Project ” ) ▁and ▁[ se ek ] ▁Federal ▁Trans it ▁Administration ▁( “ F TA ” ) ▁review ▁and ▁appro val ▁of ▁the ▁red es igned ▁GL X ▁Project '. ▁ ▁The ▁first ▁step ▁will ▁be ▁res ub m itting ▁the ▁re vised ▁plan ▁to ▁the ▁F TA ▁for ▁appro val . ▁If ▁approved ▁the ▁remaining ▁work ▁will ▁be ▁re proc ured ▁using ▁the ▁design - build ▁project ▁delivery ▁method , ▁a ▁process ▁expected ▁to ▁take ▁ 1 8 ▁months ▁if ▁done ▁on