More than 75 percent of the city’s 472 subway stations do not have elevators, lifts or other methods that make them accessible for people who use wheelchairs, mobility devices or are otherwise unable to use stairs. Of the approximately 112 stations that are designated as wheelchair-accessible, only 100 currently offer working elevator service for passengers traveling in different directions, the lawsuits charge. (The MTA said that 117 of its stations are accessible to people with disabilities.)