BBC helicopter footage of the scene
Rail services disrupted when a concrete mixer hit a bridge wall and plunged on to a passing train carriage are not expected to resume until Monday.
Several people were injured when the 26-tonne lorry hit the bridge at Oxshott in Surrey and landed on the passing commuter train.
South West Trains are expecting the disruption to affect rush-hour travellers on Monday.
Three people are thought to be badly injured including the lorry driver.
Up to 40 people were on the train which was heading towards London Waterloo when the accident happened on Warren Road at about 1530 GMT on Friday.
The 38-year-old lorry driver was freed from the wreckage and is said to be in a stable condition at St George’s Hospital, Tooting, south London.
The concrete mixer struck the third carriage from the back of the train punching a large hole in the metal roof.
Eighteen-year-old Timi Raji rushed to the door of the carriage that was hit when the train ground to a halt after passengers heard a loud bang.
“The door was blocked but we could see someone was at the bottom of the carriage, trying to get out.
“The train had been crushed and the guy was trying to escape.
“He was on his stomach and we could only see his feet sticking out. My friends and I were trying to calm him down and talking to him.”
British Transport Police and Surrey Police investigating the cause of the crash remained at the scene throughout Saturday.
A Surrey Police spokesman said the incident “will have an impact not only on local traffic around Oxshott and surrounding areas, which will need to find alternative routes, but the congestion is anticipated to impact on the M25.”
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