Simplify the following text for a Grade 6 native English-speaking person.
Original: The eastern side was built by the Victoria Station and Pimlico Railway , ( a consortium of the London Brighton and South Coast Railway , the London , Chatham and Dover Railway , the Great Western Railway and the London and North Western Railway ) in 1858 to 60 to carry trains into Victoria station ; it was the first railway bridge across the Thames in central London .
Simplified: The eastern side was built by the London , Chatham and Dover Railway in 1858 to 60 to carry trains into Victoria Station . This was the first railway bridge across the Thames in central London .