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World Longest Underwater Road Tunnel Construction

QINGDAO, CHINA - DECEMBER 15, 2025 - At the excavation site of the "Haitian" shield tunneling machine, the builders are carrying out bolt tightening work on the pipe segments in Qingdao, Shandong Province, China on December 15, 2025. The tunnel is 17.48 kilometers long, with a sea section of 9.95 kilometers, making it the longest underwater road tunnel currently under construction in the world.

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World Longest Underwater Road Tunnel Construction

QINGDAO, CHINA - DECEMBER 15, 2025 - The "Haitian" shield tunneling machine of the second tunnel broke through 3000 meters in Jiaozhou Bay, Qingdao, China on December 15, 2025. The tunnel is 17.48 kilometers long, with a sea section of 9.95 kilometers, making it the longest underwater road tunnel currently under construction in the world.

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World Longest Underwater Road Tunnel Construction

QINGDAO, CHINA - DECEMBER 15, 2025 - At the excavation site of the "Haitian" shield tunneling machine, the builders are carrying out bolt tightening work on the pipe segments in Qingdao, Shandong Province, China on December 15, 2025. The tunnel is 17.48 kilometers long, with a sea section of 9.95 kilometers, making it the longest underwater road tunnel currently under construction in the world.

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World Longest Underwater Road Tunnel Construction

QINGDAO, CHINA - DECEMBER 15, 2025 - At the excavation site of the "Haitian" shield tunneling machine, the builders are carrying out bolt tightening work on the pipe segments in Qingdao, Shandong Province, China on December 15, 2025. The tunnel is 17.48 kilometers long, with a sea section of 9.95 kilometers, making it the longest underwater road tunnel currently under construction in the world.

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Construction of World's Longest Undersea Railway Tunnel - China

Technicians mark the 2,500th segment ring in the Jintang undersea tunnel of the Ningbo-Zhoushan Railway, as the tunnel boring machine exceeds a tunneling mileage of 5,000 meters in Zhoushan, east China's Zhejiang Province, Nov. 28, 2025. China's self-developed tunnel boring machine "Dinghai" exceeded a tunneling mileage of 5,000 meters on Friday at the Jintang undersea tunnel between cities of Ningbo and Zhoushan in east China's Zhejiang Province. The milestone marks the completion of over 80 percent of the tunneling workload in Zhoushan section of Jintang undersea tunnel. The tunnel, stretching 16.18 km, is an crucial part for the Yongzhou (Ningbo-Zhoushan) high-speed railway, and is set to be the world's longest undersea railway tunnel upon completion. Photo by Huang Zongzhi/Xinhua/ABACAPRESS.COM

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Construction of World's Longest Undersea Railway Tunnel - China

Workers pose for a group photo inside the tunnel boring machine "Dinghai" in celebration of the machine exceeding a tunneling mileage of 5,000 meters in Zhoushan, east China's Zhejiang Province, Nov. 28, 2025. China's self-developed tunnel boring machine "Dinghai" exceeded a tunneling mileage of 5,000 meters on Friday at the Jintang undersea tunnel between cities of Ningbo and Zhoushan in east China's Zhejiang Province. The milestone marks the completion of over 80 percent of the tunneling workload in Zhoushan section of Jintang undersea tunnel. The tunnel, stretching 16.18 km, is an crucial part for the Yongzhou (Ningbo-Zhoushan) high-speed railway, and is set to be the world's longest undersea railway tunnel upon completion. Photo by Huang Zongzhi/Xinhua/ABACAPRESS.COM

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Construction of World's Longest Undersea Railway Tunnel - China

A worker assembles a segment ring inside the tunnel boring machine "Dinghai" in Zhoushan, east China's Zhejiang Province, Nov. 28, 2025. China's self-developed tunnel boring machine "Dinghai" exceeded a tunneling mileage of 5,000 meters on Friday at the Jintang undersea tunnel between cities of Ningbo and Zhoushan in east China's Zhejiang Province. The milestone marks the completion of over 80 percent of the tunneling workload in Zhoushan section of Jintang undersea tunnel. The tunnel, stretching 16.18 km, is an crucial part for the Yongzhou (Ningbo-Zhoushan) high-speed railway, and is set to be the world's longest undersea railway tunnel upon completion. Photo by Huang Zongzhi/Xinhua/ABACAPRESS.COM

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Construction of World's Longest Undersea Railway Tunnel - China

Technicians operate at the control room of the tunnel boring machine "Dinghai" in Zhoushan, east China's Zhejiang Province, Nov. 28, 2025. China's self-developed tunnel boring machine "Dinghai" exceeded a tunneling mileage of 5,000 meters on Friday at the Jintang undersea tunnel between cities of Ningbo and Zhoushan in east China's Zhejiang Province. The milestone marks the completion of over 80 percent of the tunneling workload in Zhoushan section of Jintang undersea tunnel. The tunnel, stretching 16.18 km, is an crucial part for the Yongzhou (Ningbo-Zhoushan) high-speed railway, and is set to be the world's longest undersea railway tunnel upon completion. Photo by Huang Zongzhi/Xinhua/ABACAPRESS.COM

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Construction of World's Longest Undersea Railway Tunnel - China

A technician checks operation inside the tunnel boring machine "Dinghai" in Zhoushan, east China's Zhejiang Province, Nov. 28, 2025. China's self-developed tunnel boring machine "Dinghai" exceeded a tunneling mileage of 5,000 meters on Friday at the Jintang undersea tunnel between cities of Ningbo and Zhoushan in east China's Zhejiang Province. The milestone marks the completion of over 80 percent of the tunneling workload in Zhoushan section of Jintang undersea tunnel. The tunnel, stretching 16.18 km, is an crucial part for the Yongzhou (Ningbo-Zhoushan) high-speed railway, and is set to be the world's longest undersea railway tunnel upon completion. Photo by Huang Zongzhi/Xinhua/ABACAPRESS.COM

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2025 WMC Held in Hefei

HEFEI, CHINA - SEPTEMBER 20, 2025 - Tourists visit the first 16 meter ultra large diameter shield tunneling machine "Jinghua" model produced in China at the 2025 World Manufacturing Convention (WMC) at the Binhu International Convention and Exhibition Center in Hefei, Anhui Province, China on September 20, 2025.

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Yuli Expressway Construction - China

An aerial drone panoramic photo taken on August 19, 2025 shows the Urumqi-Yuli Expressway under construction tunneling through the Tianshan Mountains in northwest China's Xinjiang Uygur Autonomous Region. The 319.7-km-long Urumqi-Yuli Expressway, which runs from the regional capital of Urumqi in northern Xinjiang to Yuli County in southern Xinjiang, is expected to get ready for traffic by the end of this year. Photo by Hu Huhu /Xinhua/ABACAPRESS.COM

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3rd CISCE Held in Beijing

BEIJING, CHINA - JULY 17, 2025 - The audience watched the largest diameter shield tunneling machine model independently developed by China at the 3rd China International Supply Chain Expo in Beijing, China on July 17, 2025.

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Rail Shield Tunneling in Chongqing

CHONGQING, CHINA - APRIL 28, 2025 - A technician is operating a shield machine for tunneling operations in the section between the Logistics Park Hub Station and the Logistics Park North Station of the first phase of Chongqing Rail Transit Line 7 in Chongqing, China on April 28, 2025.

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Rail Shield Tunneling in Chongqing

CHONGQING, CHINA - APRIL 28, 2025 - Workers are engaged in the assembly of shield segments in the tunnel between the Logistics Park Hub Station and the Logistics Park North Station of the first phase of Chongqing Rail Transit Line 7 in Chongqing, China on April 28, 2025.

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Rail Shield Tunneling in Chongqing

CHONGQING, CHINA - APRIL 28, 2025 - A construction worker is conducting horizontal transportation of shield segments between the Logistics Park Hub Station and the Logistics Park North Station section of the first phase of Chongqing Rail Transit Line 7 in Chongqing, China on April 28, 2025.

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Rail Shield Tunneling in Chongqing

CHONGQING, CHINA - APRIL 28, 2025 - The shield machine is all set to go for the section between the Logistics Park Hub Station and the Logistics Park North Station of the first phase of Chongqing Rail Transit Line 7 in Chongqing, China, April 28, 2025.

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Rail Shield Tunneling in Chongqing

CHONGQING, CHINA - APRIL 28, 2025 - Construction workers at the Logistics Park North Station of the Logistics Park Hub Station of the first phase of Chongqing Rail Transit Line 7 are engaged in the hoisting and lowering of shield segments into the shaft in Chongqing, China on April 28, 2025.

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Assembly Ceremony for The Shield Tbm Tool Carrier - China

An aerial drone photo taken on January 22, 2025 shows the cutter head of "Jianghaihao" shield tunneling machine being hoisted at a construction site of Haitai Yangtze River Tunnel in Nantong City, east China's Jiangsu Province. The mounting ceremony of the cutter head of "Jianghaihao" shield tunneling machine, with a diameter of 16.64 meters, was held here on Wednesday. The 39.07-km Haitai Yangtze River Tunnel links the Haimen District of Nantong City with Taicang of Suzhou City, both in Jiangsu. Photo by Xinhua/Yang Lei/ABACAPRESS.COM

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Assembly Ceremony for The Shield Tbm Tool Carrier - China

This photo taken on January 22, 2025 shows the cutter head of "Jianghaihao" shield tunneling machine at a construction site of Haitai Yangtze River Tunnel in Nantong City, east China's Jiangsu Province. The mounting ceremony of the cutter head of "Jianghaihao" shield tunneling machine, with a diameter of 16.64 meters, was held here on Wednesday. The 39.07-km Haitai Yangtze River Tunnel links the Haimen District of Nantong City with Taicang of Suzhou City, both in Jiangsu. Photo by Xinhua/Yang Lei/ABACAPRESS.COM

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Assembly Ceremony for The Shield Tbm Tool Carrier - China

An aerial drone photo taken on January 22, 2025 shows the cutter head of "Jianghaihao" shield tunneling machine during its mounting ceremony at a construction site of Haitai Yangtze River Tunnel in Nantong City, east China's Jiangsu Province. The mounting ceremony of the cutter head of "Jianghaihao" shield tunneling machine, with a diameter of 16.64 meters, was held here on Wednesday. The 39.07-km Haitai Yangtze River Tunnel links the Haimen District of Nantong City with Taicang of Suzhou City, both in Jiangsu. Photo by Xinhua/Ji Chunpeng/ABACAPRESS.COM

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Assembly Ceremony for The Shield Tbm Tool Carrier - China

This photo taken on January 22, 2025 shows the cutter head of "Jianghaihao" shield tunneling machine at a construction site of Haitai Yangtze River Tunnel in Nantong City, east China's Jiangsu Province. The mounting ceremony of the cutter head of "Jianghaihao" shield tunneling machine, with a diameter of 16.64 meters, was held here on Wednesday. The 39.07-km Haitai Yangtze River Tunnel links the Haimen District of Nantong City with Taicang of Suzhou City, both in Jiangsu. Photo by Xinhua/Yang Lei/ABACAPRESS.COM

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Assembly Ceremony for The Shield Tbm Tool Carrier - China

An aerial drone photo taken on January 22, 2025 shows the cutter head of "Jianghaihao" shield tunneling machine being hoisted at a construction site of Haitai Yangtze River Tunnel in Nantong City, east China's Jiangsu Province. The mounting ceremony of the cutter head of "Jianghaihao" shield tunneling machine, with a diameter of 16.64 meters, was held here on Wednesday. The 39.07-km Haitai Yangtze River Tunnel links the Haimen District of Nantong City with Taicang of Suzhou City, both in Jiangsu. Photo by Xinhua/Yang Lei/ABACAPRESS.COM

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Assembly Ceremony for The Shield Tbm Tool Carrier - China

An aerial drone photo taken on January 22, 2025 shows the cutter head of "Jianghaihao" shield tunneling machine being hoisted at a construction site of Haitai Yangtze River Tunnel in Nantong City, east China's Jiangsu Province. The mounting ceremony of the cutter head of "Jianghaihao" shield tunneling machine, with a diameter of 16.64 meters, was held here on Wednesday. The 39.07-km Haitai Yangtze River Tunnel links the Haimen District of Nantong City with Taicang of Suzhou City, both in Jiangsu. Photo by Xinhua/Yang Lei/ABACAPRESS.COM

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Assembly Ceremony for The Shield Tbm Tool Carrier - China

An aerial drone photo taken on January 22, 2025 shows the cutter head of "Jianghaihao" shield tunneling machine during its mounting ceremony at a construction site of Haitai Yangtze River Tunnel in Nantong City, east China's Jiangsu Province. The mounting ceremony of the cutter head of "Jianghaihao" shield tunneling machine, with a diameter of 16.64 meters, was held here on Wednesday. The 39.07-km Haitai Yangtze River Tunnel links the Haimen District of Nantong City with Taicang of Suzhou City, both in Jiangsu. Photo by Xinhua/Ji Chunpeng/ABACAPRESS.COM

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Assembly Ceremony for The Shield Tbm Tool Carrier - China

This photo taken on January 22, 2025 shows the cutter head of "Jianghaihao" shield tunneling machine during its mounting ceremony at a construction site of Haitai Yangtze River Tunnel in Nantong City, east China's Jiangsu Province. The mounting ceremony of the cutter head of "Jianghaihao" shield tunneling machine, with a diameter of 16.64 meters, was held here on Wednesday. The 39.07-km Haitai Yangtze River Tunnel links the Haimen District of Nantong City with Taicang of Suzhou City, both in Jiangsu. Photo by Xinhua/Ji Chunpeng/ABACAPRESS.COM

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Fabricated Shield Tunnel Segments

NANCHANG, CHINA - JANUARY 1, 2025 - Nanchang Jiujiang High speed Railway shield tunneling, Nanchang City, Jiangxi Province, China, January 1, 2025.

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Fabricated Shield Tunnel Segments

NANCHANG, CHINA - JANUARY 1, 2025 - Lifting of shield tunneling machine segments for Tianxiang Avenue Tunnel of Nanchang Jiujiang High speed Railway, Nanchang City, Jiangxi Province, China, January 1, 2025.

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Fabricated Shield Tunnel Segments

NANCHANG, CHINA - JANUARY 1, 2025 - Lifting of shield tunneling machine segments for Tianxiang Avenue Tunnel of Nanchang Jiujiang High speed Railway, Nanchang City, Jiangxi Province, China, January 1, 2025.

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Fabricated Shield Tunnel Segments

NANCHANG, CHINA - JANUARY 1, 2025 - Assembly of shield tunneling machine segments for Tianxiang Avenue Tunnel of Nanchang Jiujiang High speed Railway, Nanchang City, Jiangxi Province, China, January 1, 2025.

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