TBILISI, Georgia, Oct. 21, 2026 /PRNewswire/ -- On October 20, with the completion of concrete pouring for the final section of the arch ring, the left half of the B3 Arch Bridge, a key control project of Lot 2 of the Georgia North–South Corridor Road Project constructed by China Railway 23rd Bureau Group Co., Ltd., was successfully closed. The entire arch ring is expected to achieve arch closure by the end of the year. This closure marks a significant achievement in the construction of the core structural component of the largest-span cast-in-situ concrete arch bridge in the Caucasus regi…READ FULL ARTICLE