Merchandise Mart is a station on the Chicago Transit Authority's 'L' system, located in the Near North Side neighborhood at 350 North Wells Street in Chicago, Illinois (directional coordinates 320 north, 200 west). The station is elevated above street level, on a steel structure. The turnstiles and customer assistant booth of the current station are located on the second level of the Merchandise Mart itself. This is the main entrance to the station, although there are two fare-card only, unattended entrances atop two long stairways accessed directly from Wells Street, just north of Kinzie Avenue. The station is constructed mostly of steel, with wooden platforms covered by a canopy most of their length. There are two side platforms both long enough to support eight-car trains, the longest possible on the CTA system. The southbound platform is just slightly below the level of the station entrance while an enclosed bridge over the tracks connects to the northbound platform on the opposite side. The station is fully accessible, resulting in a complicated elevator setup. The elevator on the southbound platform can lower from the entrance to the platform, as well as go up to the top of the bridge.