In April 1999, JPACT revived transit plans for I-205 and McLoughlin Boulevard by announcing the $8.8 million South Corridor Transportation Study, which would analyze transportation alternatives for each corridor. In October 2000, the committee narrowed the range of alternatives in a report that outlined building either both light rail lines, a combination of a light rail line and an improved bus service, bus rapid transit, or dedicated bus lanes. The South Corridor Supplemental Draft Environmental Impact Statement (SDEIS) was published in December 2002. After public meetings concluded in 2003, JPACT recommended both light rail options. They decided the first MAX line to Clackamas County should be built along the I-205 Transitway from Gateway to Clackamas Town Center, and that this would be the first phase of a two-part expansion, the second phase of which would be a Portland–Milwaukie line. While planning for the second phase, analysis showed that a fourth service along the existing downtown tracks on Morrison and Yamhill streets, then served by the Blue, Red, and Yellow lines, would push that alignment to maximum capacity. JPACT responded by amending the first phase to include building light rail on the Portland Transit Mall. The first phase was completed in 2009, with the transit mall rebuilt with light rail and the Yellow Line rerouted to it that August. The I-205 MAX opened the following month with a new Green Line service.