Irabu Ohashi Bridge, Okinawa.
Irabu Ohashi is the longest non-tolled bridge in Japan with its 3.54 kilometers long connection between Miyako-jima and Irabu-jima islands. The structure was achieved in 2015 and, akin to a concrete-made sea dragon, elegantly crosses the turquoise water of the archipelago. The sides of the road have parking areas to enjoy the landscape for a little bit longer.
https://www.kanpai-japan.com/okinawa/miyako-jima/irabu-ohashi-bridge
https://en.wikipedia.org/wiki/Irabu_Island