A worker is carrying out maintenance on the Tianxiang Avenue Tunnel of the Nanchang Jiujiang High-speed Railway under construction in Nanchang City, Jiangxi Province, China on June 30, 2025. The last fully prefabricated box culvert of Nanchang Jiujiang High speed Railway Tianxiang Avenue Tunnel was successfully completed. The Tianxiang Avenue Tunnel is a controlled project for the entire Nanchang Jiujiang High speed Railway, with a total length of 6.379 kilometers. It is currently the largest diameter shield tunnel in Jiangxi Province, with a shield section of 4.4 kilometers. At present, shield tunneling has been carried out for 3.2 kilometers, completing 80% of the overall progress, and it is expected to achieve full tunnel connection by the end of August.
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