Travel Gatlinburg SkyBridge, longest pedestrian suspension bridge in North America, opens this month May 2, 2019 Juan Buitrago and Andrew Capps, Knoxville News Sentinel Comments Off on Gatlinburg SkyBridge, longest pedestrian suspension bridge in North America, opens this month The nearly 700-feet-long and 150-feet-high Gatlinburg SkyBridge, the longest pedestrian suspension bridge in North America, opens May 17.