News The longest pedestrian suspension bridge in the US is now open — and part of it is see-through May 15, 2019May 17, 2019Brenna McDermott, Knoxville News SentinelComments Off on The longest pedestrian suspension bridge in the US is now open — and part of it is see-through We walked the longest footbridge in the U.S and can attest: Gatlinburg SkyBridge is a bucket-list bridge – even if you're afraid of heights.