The Metropolitan Transportation Authority is set to approve a $1.97 billion contract to bore tunnels and start construction on two new Harlem subway stations, a major step in extending the long-delayed Second Avenue Subway line north from the Upper East Side into East Harlem.

The MTA board is expected to vote Monday to award the contract to Connect Plus Partners, a joint venture of Halmar International and FCC Construction. The work is part of Phase 2 of the Second Avenue Subway, a $6.99 billion project slated to open in September 2032.

The contract covers converting a 2,500-foot tunnel built in the 1970s between 116th and 125th streets into a station box, boring an 8,400-foot tunnel to Malcolm X Boulevard, mining the cavern for the 125th Street Station, and excavating shafts for ancilla

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