"Join me on an unforgettable journey as I face my fear of heights and conquer Japan's steepest summit! Discover the challenges, triumphs, and breathtaking views along the way. #FearOfHeights # ...

The bridge's gradient pales in comparison to the world's steepest street or road—Baldwin Street in Dunedin, New Zealand, which has a gradient of 34.8 percent, according to Guinness World Records.