The Hike and Bike Trail that runs alongside Ladybird Lake in downtown Austin is one of the City's most-valued recreational areas. 3,000 - 15,000 people use the trails each day to run, walk, bike, or relax. Unfortunately, the trail loop is incomplete: a 1.1 mile gap on the south shore on either side of I-35 is a problematic hole in a much-loved 10-mile loop. Ttrail users who venture East of Congress Avenue on the south shore "must divert onto the narrow sidewalk and travel along busy Riverside Drive, crossing 35 busy business entrances . . .