The Gateway/Northeast 99th Avenue Transit Center, commonly known as Gateway Transit Center, is a TriMet bus transit center and light rail station on the MAX Blue, Green and Red Lines in Portland, Oregon, United States. It is the 14th stop eastbound on the current Eastside MAX. This station is where all three lines split, with Blue Line trains proceeding east to Gresham, Green Line trains proceeding south to Clackamas, and Red Line trains proceeding north to Portland International Airport. When opened in 1986, it was the busiest station on the Portland–Gresham MAX line, the only line in the system at that time, and was the terminus of 11 bus lines. Currently seven bus lines serve the Gateway Transit Center.The transit center is next to the interchange of Interstate 84 and Interstate 205, and behind a Fred Meyer store.Platform layoutThe station contains three tracks and platforms, and the bus stops surround it, on the east and west sides. The eastern track is used by inbound (westbound) Blue and Green Line trains. Trains on this track open up doors to both the side and center platforms. The middle track is to the west of the center platform and used by inbound Red Line trains. Finally, the westernmost track has a side platform and is used by all outbound trains.
