The designers also exploit the meandering path to maintain a 1:12 gradient, making Forest Walk accessible to wheelchair-bound visitors and children in strollers. (Stairways along the path lead to the earth trail below, laid out in conjunction with the elevated walkway overhead.) As it progresses along its nearly mile-long expanse, the walk rises more than 200 feet from its starting point at the Alexandra Arch Bridge — which LOOK designed as a sweeping gateway into this sanctuary of calm repose. Forest Walk begins by traversing a low valley, and at certain points it reaches nearly 60 feet above grade. The walkway is hoisted into the air by steel columns measuring 8 inches in diameter at these extreme heights. For most of the walkway, where it rises only 20 to 25 feet off the ground, the columns average 6 inches in diameter.
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