Second Avenue Subway Phase 2
Phase 2 extends the Second Avenue Subway (Q line) into East Harlem, funded partly by NYC's Congestion Relief Zone tolling revenue and a $3.4 billion Federal Transit Administration Capital Investment Grant secured by Sen. Chuck Schumer's office. MTA says reusing a 1970s-built tunnel stub for the future 116th St. station has saved roughly $1.3 billion, making Phase 2 about 10% cheaper per mile than Phase 1. In October 2025, the federal Office of Management and Budget withheld this project's federal grant (along with funding for the Hudson Tunnel Project) citing objections to "DEI principles"; the MTA sued and the funds were released in April 2026.
- Total Budget
- $6.99 billion, per the Governor's office
- Status
- Under construction — utility relocation and early civil work; heavy tunneling targeted to start 2027
- Location
- Extends the Q line from 96th St. along Second Avenue to 125th St., then west to Park Avenue, East Harlem, Manhattan (~1.5 miles, three new stations at 106th, 116th, and 125th Streets)
- Total Budget
- $6.99 billion
- Route Extension
- ~1.5 miles
- New Stations
- 3 (106th, 116th, 125th St.)
- Federal Grant
- $3.4 billion
- Saved by Reusing 1970s Tunnel Stub
- ~$1.3 billion
- Tunneling Contract (Connect Plus Partners)
- ~$1.9–1.972 billion
MTA capital construction is a New York State public-authority project, not subject to standard NYC Department of Buildings permitting the way private construction is — so this project doesn't and won't appear in DOB Job Application Filings or DOB Permit Issuance, the two datasets the rest of this site is built on. That's why it's tracked here by hand instead of pulled live like everything else on Constructel NYC.
Who's Building It
2 contracts named in reporting, 6 firms including the owner, 2 with a disclosed contract value. Each firm links to its own profile — every project it's on, and its DOB permit history where one exists under its name. Joint ventures are shown as reported, with each partner linked.
Connect Plus Partners (Halmar International + FCC Construction joint venture)
Tunneling contractor, Contract 2
~$1.9–1.972 billion (sources vary)
Halmar International is also on Hudson Tunnel Project (Gateway Program), Penn Station Reconstruction (New York Penn Station Transformation)
FCC Construction is also on Hudson Tunnel Project (Gateway Program)
Source →Skanska-Traylor-Walsh joint venture (Skanska USA, Traylor Bros., Walsh Construction)
106th St. station structural shell design-build, Contract 3
$1.02 billion total (Skanska's own share: $498 million)
Skanska USA is also on Hudson Tunnel Project (Gateway Program), Penn Station Reconstruction (New York Penn Station Transformation)
Traylor Bros. is also on Hudson Tunnel Project (Gateway Program)
Walsh Construction is also on Hudson Tunnel Project (Gateway Program)
Source →
Phases
Click a phase for its full detail.
0 of 3 phases complete
Contract 1 — Utility Relocation
UnderwayAwarded January 2024; relocating underground utilities along the Second Avenue corridor ahead of tunneling.
Same Firms, Other Projects
Other tracked landmark projects, towers and conversions sharing at least one firm with Second Avenue Subway Phase 2.
- Hudson Tunnel Project (Gateway Program)Landmark Infrastructure
Shared firms: Skanska USA, Walsh Construction, Traylor Bros., Halmar International, FCC Construction
- Penn Station Reconstruction (New York Penn Station Transformation)Landmark Infrastructure
Shared firms: Halmar International, Skanska USA
- Interborough Express (IBX)Landmark Infrastructure
Shared firm: Metropolitan Transportation Authority (MTA)
News & Announcements
- Governor Hochul Announces Second Avenue Subway Phase 2 Moving Forward With Award of Tunneling Contract
Office of the Governor of New York (official) · 2025-08-18
- Second Ave. Subway Phase 2 Plan Envisions $5B–$7B Harlem Extension
Engineering News-Record · 2024
- Trump unfreezes money for Second Avenue subway after standoff over 'DEI principles'
Gothamist · 2026-04-16
- Skanska-Traylor-Walsh JV Awarded $1.02B Contract for Second Avenue Subway Phase II Project
Skanska (official) · 2026-06
Frequently Asked
- Who is building Second Avenue Subway Phase 2?
- Firms named in sourced reporting: Connect Plus Partners (Halmar International + FCC Construction joint venture) — Tunneling contractor, Contract 2; Skanska-Traylor-Walsh joint venture (Skanska USA, Traylor Bros., Walsh Construction) — 106th St. station structural shell design-build, Contract 3.
- How much does Second Avenue Subway Phase 2 cost?
- $6.99 billion, per the Governor's office.
- What is the status of Second Avenue Subway Phase 2?
- Under construction — utility relocation and early civil work; heavy tunneling targeted to start 2027.
- Who oversees Second Avenue Subway Phase 2?
- Metropolitan Transportation Authority (MTA).
- Where is Second Avenue Subway Phase 2?
- Extends the Q line from 96th St. along Second Avenue to 125th St., then west to Park Avenue, East Harlem, Manhattan (~1.5 miles, three new stations at 106th, 116th, and 125th Streets)