The first phase cost $4.45 billion — a per-mile cost of roughly $2.5 billion. The Second Avenue subway extension’s Phase Two will grow the Q line from 96th Street to to East 125th Street and ...

This phase of work in the four-phase plan would extend MTA’s Second Avenue line 1.76 miles from ... cover 49% of the project’s cost, about $3.4 billion. President Joe Biden’s 2024 budget ...