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This is the incredible way China is set to expand its huge labyrinth of high-speed railways in a £94bn project.

China Railway Corporation's impressive bridge building machine - known as 'The Iron Monster' - will be used to create thousands of miles of new high-speed rail lines in 2017.

It was announced today that 2,100 km of new rail line, 2,500 km of double-track lines and 4,000 km of electrified railways will be built this year.

Mesmerising footage shows the 580 tonne monster wheel itself into place with ease as an army of engineers frantically work below.

(Image: REUTERS) (Image: YouTube / China Train)

The SL900/32 picks up rafters or sections of concrete and holds them in place before installing them to span to the next bridge support, already standing.

It previously created the 1,376km high-speed Railway connecting Chengdu to Guangzhou, in the south-west of the country.

The machine has 64 wheels, which are spread across four sections of 16, and each section can rotate 90 degrees.

Each machine is capable of building 730 spans in its operating lifetime.

(Image: YouTube) (Image: AFP)

Most of this year's construction projects will happen in China's central and western regions, where the rail networks are considerably lacking compared to the rest of the country.

The vice minister of transport, Yang Yudong, has promised £400billion for the five-year project, between 2016 and 2020, the Xinhua-run Economic Information Daily reported.

By 2020, China will have increased the length of high-speed railways in operation to 30,000km, connecting more than 80 percent of its big cities.