MassDOT has posted its monthly status report on the Green Line Extension project. Here are some highlights of new information added since the March status report:
+ Advanced Conceptual design work is progressing, including: refinement and analysis of track alignments and typical section verification, bridge and station design, development of design criteria, a traction power study, maintenance facility programming and yard layout. This effort will soon culminate in a design milestone when the In-Progress Advanced Conceptual/Preliminary Engineering Submittal of the Green Line Extension Project is made to MBTA, beginning in April and continuing through mid-May 2012.
+ The MBTA continues to advance designs for the stations and bridges, still occasionally generating new questions and design challenges, mostly related to emergency egress and accessibility requirements. Efforts to resolve those issues as quickly as possible are underway so as not to delay the progress of the design work.
+ Station specific alternatives on emergency egress off the end of the platforms continue to be discussed with state public safety officials. It is anticipated that a code interpretation hearing will be required for four of the station locations.
+ The in progress advanced conceptual/preliminary engineering design of the stations is now complete and under QA/QC review.
+ A confirmatory survey of the right of way line and adjacent property lines [to determine real estate needs for the GLX] is underway and will be completed in the coming months.
+ With a Request for Qualifications for the completion of the advanced Preliminary Engineering and the Final design now advertised and available, staff are working on the more detailed scope of services to accompany the Request for Proposals to be issued to the most qualified firms.
+ The FTA action to approve the requested permission to enter the Preliminary Engineering phase is anticipated no later than the end of April 2012, while the issuance of the Finding of No Significant Impact (FONSI) is expected approximately two weeks later. [The March status report said that both of these approvals were expected “by no later than April 2012.]
+ At this point one of the largest challenges continues to be the timely receipt from the FTA of the approval to enter PE and the receipt of the FONSI. The next largest challenges are: the approvals to use CM/GC as a project delivery method; and getting FTA approval to enter Final Design.
Read the full report here.