Last pylon stands on the road to a record: the 29.2 km Hangzhou Bay bridge prepares for 350 km/h trains
Two 200‑metre pylons, 29.2 km of total length, strong tides and typhoons — engineers have completed the main supports of the northern bridge. This is the first of three bay bridges to have its pylons ready. The bridge will become part of the Nantong–Suzhou–Jiaxing–Ningbo high‑speed railway.
As reported by CCTV+, on Sunday workers completed construction of the final main pylon of the northern Hangzhou Bay bridge in Zhejiang Province, eastern China, finishing all main pylon erection work on this section. The 29.2‑km Hangzhou Bay bridge, a key segment of the Nantong–Suzhou–Jiaxing–Ningbo high‑speed railway, consists of three bay bridges and 26 kilometres of approach bridges. The bridge is designed for speeds of up to 350 kilometres per hour and has a ballast‑less double‑track configuration.
The northern bay bridge, 932.7 metres long, has two main pylons each 200 metres tall. Pylon No. 8 was completed in January this year, and its twin, Pylon No. 9, was finished on Sunday, making this the first of the three bay bridges to have all main pylons in place. Hangzhou Bay is one of the three most challenging tidal estuaries in the world, known for its strong tides, swift currents and frequent typhoons. Winds above Force 6 blow for about 180 days a year, and tidal ranges reach nine metres. The two main pylons must therefore withstand these harsh marine conditions while meeting strict requirements for rigidity, alignment and stability demanded by high‑speed rail operations.
Hangzhou Bay is one of China's most unpredictable bodies of water. Its tidal bores, typhoons and strong currents create extreme construction conditions. The Nantong–Suzhou–Jiaxing–Ningbo high‑speed railway is a key project in eastern China that will cut travel times between cities. A ballast‑less bridge is an engineering solution that enhances track stability at high speeds. Completion of the pylons is a major milestone, but span installation and track‑laying still lie ahead.
When 200‑metre pylons rise in the middle of a bay where tides surge nine metres and typhoons rage for half the year, engineers are not just building — they are challenging the elements. A bridge almost 30 kilometres long is not just steel and concrete. It is a vital artery that will connect cities, shorten distances and accelerate the economy. Every pylon set in these harsh waters is a small victory over the chaos of nature. And when the first train races across this bridge at 350 km/h, passengers will never know how much strength and courage it took to make this road a reality.
