The line through the low level platforms first opened in 1846 as a goods only branch as far as Thames Wharf. The bridge under the main line was too low for many locomotives, so a number of engines were equipped with hinged chimneys in order they could operate the line. On opening there was also a line that linked what is now known as the Great Eastern Main Line directly to the docks enabling through running from Colchester to Thames Wharf. The docks and associated railway networks expanded with passenger services to North Woolwich starting in 1847.