which passes over Corona Yard and connects to the Mets–Willets Point station on the Long Island Rail Road (LIRR)'s Port Washington Branch, before entering the grounds of the National Tennis Center. A wooden mezzanine is located underneath the tracks and platforms, with two ramps to the southbound platform and two stairways to the island platform. The north side of the station has a stairway, which formerly led to Shea Stadium but now leads directly to Citi Field's Jackie Robinson Rotunda. The mezzanine contains a station agent's booth, as well as a main fare control area with several turnstiles and an emergency-exit door. Typically, passengers enter the station through the main fare control area, but these turnstiles are deactivated during Mets games, allowing pedestrians to walk between the LIRR station to the south and Citi Field to the north without paying a fare. During Mets games, the ramps to the southbound platform and the stairs to the island platform are accessed by their own fare-control areas, each with several turnstiles. Accessibility The Mets–Willets Point station is generally not accessible to passengers with disabilities, except during sporting events, when the northbound side platform is open. In 2009, the MTA built a ramp from the south side of Roosevelt Avenue to the station mezzanine. The two existing ramps from the mezzanine to station level were modified to make them ADA-accessible; the work cost $4 million. The ramps are owned and maintained by the New York City Department of Parks and Recreation. Some riders with disabilities were unhappy that the station was not made completely accessible during the station's renovation. By contrast, other New York City Subway stations that serve sports venues, including 161st Street–Yankee Stadium for Yankee Stadium, 34th Street–Penn Station at Seventh Avenue and Eighth Avenue for Madison Square Garden, and Atlantic Avenue–Barclays Center for Barclays Center, are completely accessible. Northbound local trains open their doors on the side platform during games and special events only; the platform typically opens 90 minutes before an event and closes 90 minutes afterward. The southbound platform and the center platform are not wheelchair-accessible. Transit advocates also complained the Willets Point station's lack of accessibility outside of game days; aside from Willets Point, only four of the Flushing Line's 18 stations in Queens were accessible. A footbridge had formerly extended north over Casey Stengel Plaza, leading to a long, circular staircase with turnstiles at the bottom,