CMAR Downtown Crossing Phase 2 and Central Square Station Accessibility Improvements, Boston and Cambridge, MA Project Description DTX Phase II: Macy’s Elevator - Construction and installation of a new 2-stop Macy’s elevator, which will provide connection from, and, to the Orange Line Northbound to the Red Line Southbound Platforms, along with the associated mechanical rooms and machinery. Winter Street Elevator: Replacement of the existing 2-stop Winter Street elevator with a larger, 3-stop elevator, which will provide transfers from, and, to street level, Orange Line Southbound, & Red Line Southbound Platforms, along with the associated mechanical rooms, machinery, new Red Line Lobby Area, and extension of the South Passageway. Park Street Elevator: Construction and installation of a 2-stop Park Street elevator, which will provide connection from, and, to Orange Line Southbound, Green Line Eastbound, and Red Line Center Platform, along with associated mechanical rooms and machinery. Central Square Station: Work consists of updating Central Square Station to meet current accessibility requirements. Specifically, the proposed project will replace existing elevator #860 and elevator hoistway which extends from the Red Line outbound platform up to street level in Central Square. Additionally, the work includes the construction of two new elevators, one inbound and one outbound which extend from the Red Line inbound and outbound platform up to street level in Central Square, these will require curb modifications and traffic bollards along Mass Ave. New Areas of Rescue Assistance, one inbound and one outbound will be located adjacent to the new elevators and will be equipped with Stryker chairs, emergency call boxes and smoke proof enclosures. The inbound escalator will be modernized with a HD Transit-rated escalator with two step run-on and run-off to fit within the existing concrete areaway.

Program Management / Construction Management (PM/CM) for the North Station Draw One Bridge Replacement and Associated Track & Signal Upgrades Project The PM/CM Services will supplement the MBTA North Station Draw 1 Management team and act as an integrated team. The PM/CM will assist the MBTA in creation of performance metrics and management services, scope, cost and schedule monitoring and reporting, development of a Project Management Plan, collaborate with the MBTA’s Owners Representative, and provide additional field staff to supplement the MBTA field leads, and assist with change order/claim negotiation strategies.

General Engineering Consulting Services for Bus Maintenance Planning Services, Project Management Assistance, Procurement Assistance, Maintenance, Engineering Services, Quality Assurance and Audits, Industry Innovations and Environmental Assistance.

Engineering Services for the Inspection and Load Rating of the Authority's System-wide Tunnel comprising of the Orange Line, Blue Line, Red Line, Green Line, Silver Line, Harvard Busway, Commuter Rail, Amtrak and the abandoned tunnels on these lines.

Design & Engineering Services for Blue Line Airport Portal Flood Protection The Massachusetts Bay Transportation Authority (MBT A) Engineering and Capital Division is requesting proposals from multi-disciplined engineering firms/teams to provide design and engineering services for the Airport Portal Flood Protection project. MBTA has identified the need to address flood vulnerability in the MBTA's Blue Line and the tunnel portal west of Airport Station by designing and implementing a hinged portal flood door. The selected consultants will exhibit a depth of experience and expertise in the design and construction of tunnel, rail, power, and resiliency infrastructure to support MBTA on this project.