In the 1990s, the station underwent a major renovation. On July 9, 1993, the contract for the project's design was awarded for $2,993,948. As part of the contract, the consultant investigated whether it was feasible to reconfigure the IRT passageway, to reframe the exit structure on the Lexington Avenue platforms to accommodate the relocation and widening of stairs, the construction of a new fan room, the removal of stairs on the Broadway Line platforms, the reframing of the existing structure, and the construction of a new staircase between the intermediate and IRT mezzanines. These were all deemed feasible, and in May 1994, a supplemental agreement worth $984,998 was reached to allow the consultant to prepare the design for this work. Plans were prepared by Lee Harris Pomeroy. The project was to cost $38.5 million and start in December 1994, with a new entrance pavilion on the southeast corner of Union Square Park, containing an elevator entrance. The same year, a New York City Transit Police station opened in the Broadway Line mezzanine. A construction contract was ultimately signed in March 1995. The work involved creating a pocket park in a traffic island at the southeast corner of Union Square, a project that was completed in 2000. In addition, power infrastructure had to be upgraded to allow the construction of MetroCard vending machine equipment. In 2002, the Broadway Line station was upgraded for ADA-accessibility and its original late 1910s tiling was restored. As part of the upgrade, the MTA repaired the staircases, re-tiled for the walls and floors, upgraded the station's lights and the public address system, installed yellow safety treads along the platform edge, new signs, and new trackbeds in both directions.