In 2010, Jeungdo Bridge, spanning 900 meters and connecting Sayok Island in Jido-eup to Jeungdong-ri in Jeungdo-myeon, both in Sinan County, was opened to traffic. Before this bridge was built, Jeungdo was an island reachable only by boat; after the bridge opened, it became a place travelers could drive to directly from the mainland.
What is ironic about this is that the bridge was built barely three years after Jeungdo had made its name as a Cittaslow symbolizing "slowness." As accessibility improved, visitor numbers grew, but at the same time, the isolated identity the island had long maintained — that of a salt-farming island reachable only by boat — arguably began, from this point forward, to fade little by little. A bridge brings convenience, but it also erodes, in the same stroke, one of the very qualities that made an island an island.
The county records a 0.900-kilometer bridge built from August 2005 to July 2010. It joins Sayok and Jeungdo, while other links complete the road connection to the mainland. Driving access does not mean frequent public transport, nor did ferries cease to matter across Sinan. Bus frequency, emergency travel, logistics, traffic, and tourism pressure are separate measures. The bridge is vehicle infrastructure: do not stop or walk where prohibited, and check wind, fog, icing, and traffic controls on the day of travel.