As a subconsultant, SI Engineering, P.C. (SIE) provided condition assessment and inspection services for station component improvements at 50th Street and 86th Street Stations along the Broadway 7th Avenue Line. The overall project included incorporating platform- and mezzanine-level component repairs identified with a condition rating of 3.5 or higher in the most recent Station Condition Survey into the design package. At the 50th Street Station, the project included the northbound and southbound platforms and involved replacement design of the existing Closed Circuit Television (CCTV) system, a condition assessment, and coordination with MTA C&D Transit-Oriented Development regarding an upcoming Zoning for Accessibility developer project. At the 86th Street Station, the condition and performance of ventilators at the south end of the northbound and southbound platforms were evaluated. Additional project-wide tasks included development of an Initial Project Baseline and architectural historian support for State Historic Preservation Office (SHPO) coordination.
