Meanwhile, planning for the Portland–Milwaukie line, including the study of and public input on several alternatives for the exact route, continued. In July 2008, Metro adopted a locally preferred alternative (LPA) alignment that began at the southern end of the Portland Transit Mall and terminated at Southeast Park Avenue in Oak Grove, just south of Milwaukie proper in unincorporated Clackamas County; the alignment was extended beyond Southeast Lake Road in downtown Milwaukie, which had been the terminus in the 2003 SDEIS. The LPA also adopted a proposal for a new bridge that would carry MAX and the Portland Streetcar over the Willamette River rather than using the Hawthorne Bridge amid fears that the latter would create a traffic bottleneck. This new bridge was originally planned to run between RiverPlace on the west end and the Oregon Museum of Science and Industry (OMSI) on the east end but the LPA introduced new alternatives that moved its west end farther south in the South Waterfront. TriMet designed the new bridge to be "car-free", banning private vehicles and accommodating only transit vehicles, bicycles, and pedestrians—the first such major bridge in the country.