MTA’s $2B Second Avenue Subway Tunnel Boring Contract

MTA approves $2B tunnel-boring contract for Second Avenue Subway extension, Q train to 125th Street, 2032 service target.

MTA’s $2B Second Avenue Subway Tunnel Boring Contract
September 6, 2025 6:37 am
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Introduction

The Metropolitan Transportation Authority (MTA) board has approved a $2 billion contract for tunnel boring as part of the Second Avenue Subway project’s second phase, extending the Q train from 96th Street to 125th Street in East Harlem, New York.

Tunnel Boring Contract

The MTA board approved a $2 billion contract for tunnel boring. The contract was awarded to Connect Plus Partners, a joint venture between Halmar International and FCC Construction. The partners will bore a tunnel between 35 feet and 120 feet below Second Avenue. Early work will begin later this year, with heavy civil construction starting in early 2026, and the tunnel boring itself beginning in 2027.

Project Scope and Timeline

The new tunnel will extend from a route originally built in the 1970s to accommodate the future 116th Street Station. New tunnel will be bored from 116th Street to 125th Street, and space will also be excavated for a future station at 125th Street, according to officials from New York Gov. Kathy Hochul’s office. The project’s second phase is on schedule with a revenue service date in 2032 and a budget of $6.99 billion, MTA officials said.

Project Phases

The expansion will be completed in four phases. The first construction contract was awarded in January 2024 for utility relocation work from 105th Street to 110th Street in preparation for the construction of 106th Street Station.

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Conclusion

The MTA’s Second Avenue Subway project’s second phase, which includes a $2 billion tunnel-boring contract, is set to extend the Q train and is scheduled for a 2032 service date with a $6.99 billion budget.

Company Summary

Metropolitan Transportation Authority (MTA): The MTA board approved a $2 billion tunnel-boring contract for the second phase of the Second Avenue Subway project.

Halmar International: Halmar International is part of Connect Plus Partners, a joint venture that received the tunnel-boring contract.

FCC Construction: FCC Construction is part of Connect Plus Partners, a joint venture that received the tunnel-boring contract.

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