Like in fairy tale, it is done with a lot of love to nature, the bottom of the bridge has bright blue color and the rails on both sides are secure for little children. As you know the kids like to run ahead of their parents, so you can be sure that they are safe. Like those white structures, they are really looking like the waves :)
Here is very explanatory post, may be of your interest :)By the way, what I also wanted to mention @slowwalker, recently a new token PALcoin was introduced by @minnowsupport. Within short time it became very popular the price now is half of Steem. Everyone who has Steemit account can claim his PALcoin, logging in with posting key also you can trade with PAL as with Steem too. When you post using #palnet tag, your post will get Palcoin and Steem in its payout.