Planning and construction Following the completion of the
original subway, there were plans to construct a line along Manhattan's east side north of 42nd Street. The original plan for what became the extension north of 42nd Street was to continue it south through
Irving Place and into what is now the
BMT Broadway Line at
Ninth Street and
Broadway. In July 1911, the IRT had withdrawn from the talks, and the
Brooklyn Rapid Transit Company (BRT) was to operate on Lexington Avenue. The IRT submitted an offer for what became its portion of the
Dual Contracts on February 27, 1912. In 1913, as part of the
Dual Contracts, which were signed on March 19, 1913, the Public Service Commission planned to split the original
Interborough Rapid Transit Company (IRT) system from looking like a "Z" system (as seen on a map) to an H-shaped system. The original system would be split into three segments: two north–south lines, carrying through trains over the Lexington Avenue and
Broadway–Seventh Avenue Lines, and a west–east shuttle under 42nd Street. This would form a roughly H-shaped system. It was predicted that the subway extension would lead to the growth of the
Upper East Side and
the Bronx. On February 15, 1917, the Public Service Commission agreed to change the name of the under-construction station from 68th Street to 68th Street–Hunter College at the request of officials of
Hunter College.
Opening The 68th Street–Hunter College station opened on July 17, 1918, with service initially running between
Grand Central–42nd Street and
167th Street via the line's local tracks. On August 1, the "H system" was put into place, with through service beginning on the new east and west side trunk lines, and the institution of the
42nd Street Shuttle along the old connection between the sides. The cost of the extension from Grand Central was $58 million.
Station renovations The city government took over the IRT's operations on June 12, 1940. In 1981, the
Metropolitan Transportation Authority (MTA) listed the station among the 69 most deteriorated stations in the subway system. This station was renovated in September 1984 as part of the MTA's Adopt-A-Station Program in conjunction with a renovation of Hunter College.
Elevator installation As early as 2008, the MTA had wanted to install elevators at the 68th Street station. The MTA proposed to build elevators here under the 2010–2014 MTA Capital Program, as part of the MTA's 100 Key ADA-accessible stations program. The project scope included include building elevators at 68th Street and new street stair entrances at 69th Street and Lexington Avenue. In late 2011 and early 2012, the project faced local opposition; opponents claimed the new staircases would ruin the character of 69th Street. The MTA insisted the new entrances were necessary to reduce congestion at the station's current entrances. The 69th Street Tenants Corporation suggested building new entrances at 67th Street or 70th Street instead, although the station does not reach under either of those streets. The MTA hoped to award a contract by August 2018, with construction starting in December 2018, and completed in April 2021. By early 2019, the cost of the project had increased to $116 million. , a contract for the elevators' construction was projected to be awarded in July 2020 and be completed by 2023. The street-to-mezzanine elevator was originally supposed to be installed at the southeast corner of Lexington Avenue and 69th Street. The elevator was relocated to the northeast corner after engineers determined that the elevator would have been too complicated to install at the original location. In December 2021, a contract for the renovations was awarded to Forte/Citnalta JV. The latest design moved the street elevator next to a relocated stair at the northeast corner of 68th Street and Lexington Avenue; an engineering analysis confirmed the original location of the proposed elevator, at the southeast corner of the intersection under the overhang of Hunter College East, was structurally infeasible. A relocated street stair on the west side of Lexington Avenue opened in October 2022, The elevators were finally opened in December 2024, having cost $177 million. == Station layout ==