The Metropolitan Transportation Authority board has approved a $1.97 billion contract for tunnel boring to extend the Second Avenue Subway, a 1.5-mile addition to extend the Q Line from 116th Street to 125th Street,

The board of the Metropolitan Transportation Authority on Monday approved a $1.9 billion contract to build the long-delayed extension of the Second Avenue subway into Harlem.

The MTA’s board unanimously approved a $2 billion tunneling contract with a joint venture between Halmar International and FCC Construction for the northward expansion of the Q line Monday,