Artist's impressions of the Eye of the Yellow Sea, China's first all-steel glass arch bridge that is under construction in Rizhao, Shandong Province. The arch bridge spans about 177 meters and is expected to be completed in 2019. (Photo provided to chinadaily.com.cn)

Artist's impressions of the Eye of the Yellow Sea, China's first all-steel glass arch bridge that is under construction in Rizhao, Shandong Province. The arch bridge spans about 177 meters and is expected to be completed in 2019. (Photo provided to chinadaily.com.cn)

Artist's impressions of the Eye of the Yellow Sea, China's first all-steel glass arch bridge that is under construction in Rizhao, Shandong Province. The arch bridge spans about 177 meters and is expected to be completed in 2019. (Photo provided to chinadaily.com.cn)

Artist's impressions of the Eye of the Yellow Sea, China's first all-steel glass arch bridge that is under construction in Rizhao, Shandong Province. The arch bridge spans about 177 meters and is expected to be completed in 2019. (Photo provided to chinadaily.com.cn)

Artist's impressions of the Eye of the Yellow Sea, China's first all-steel glass arch bridge that is under construction in Rizhao, Shandong Province. The arch bridge spans about 177 meters and is expected to be completed in 2019. (Photo provided to chinadaily.com.cn)