Dramatic moment bridge collapses due to ‘heavy truck’ across world famous Trans-Siberian railway

The road bridge collapse was in Svobodny, Amur region, a town 7,800 kilometres east of Moscow on the Trans-Siberian line. 

A truck is seen driving onto the dialect which joins the two sides of the town. 

Two huge sections of the span collapse as shown on the CCTV video.

The truck loaded with sand crashes to the surface below, with the driver suffering a broken leg and chest wounds. 

A lucky pedestrian on the bridge was unharmed since the part of the viaduct he was walking on did not collapse. 

A rail worker Nikolay Vladislavovich, 45, had an even narrower escape - and is seen running from the crashing debris. 

‘Today is his second birthday,’ said a colleague. 

He was given a day off to recover.

Acting mayor Vladimir Konstantinov declared a state of emergency in the town. 

There was disruption to freight traffic on the Trans-Siberian Line in the Russian Far East. 

Passenger trains were reported to be running normally. 

The world's longest rail line connects Moscow to the country’s Pacific coast.

Officials initially blamed the collapse on the truck being ‘overloaded’ with sand. 

However, investigations are underway into whether - as is suspected -  there was a fault in the structure. 

The rest of the bridge is to be removed and rebuilt.

Special measures were underway to ensure children could return from school.

The bridge was the only crossing point between the two sides of the town.