to use due to a build-up of silt. With no prospect of a proper dock being funded without a connection to the national rail network, the Clifton Extension Railway (CER) was approved. This was a joint venture by the BPRP, Great Western Railway (GWR) and Midland Railway (MR) which ran from Sneyd Park Junction, south of , via , to join up with the national network at Narroways Hill Junction. The link opened in 1877, but initially only for goods trains. The route from Sneyd Park Junction to Clifton Down was subsequently cleared for passenger use on 3 August 1878, but the Midland and Great Western Railways did not think the BPRP track was in a suitable condition and so refused to run any passenger trains beyond Clifton Down. The station, originally known as Avonmouth Dock, was opened in 1877, shortly after the opening of the Avonmouth Docks in February that year. It was built on, or very near to, the site of a halt built in 1868 for the Docks' construction workers. The local area was still mostly rural – there were a few buildings around the station area, as well as the docks, with the closest extent of the Bristol conurbation away at Shirehampton. The station cost £275 to build, and was merely a platform on the south side of the single track, served by eight trains per day between and the BPRP's Avonmouth terminus, increasing to ten per day from 1887. The Great Western and Midland Railways considered the station inadequate for the passenger numbers expected, and so purchased additional land to enhance the station with extra tracks. The new station comprised a wide island platform – the northern face on the original through line, the southern face being for a new terminal line. The station, now known as Avonmouth Dock Joint, was constructed using mainly wood and corrugated iron. It was opened on 1 September 1885, coinciding with the beginning of passenger services beyond Clifton Down. The Great Western initially offered six trains per day each direction between Avonmouth Dock and . Fearing competition, the BPRP did not allow passengers to use GWR services between its stations. The Midland Railway did not run any passenger services beyond Clifton Down, apart from a one-month trial service in September 1885. Despite the increased traffic the BPRP suffered financially, and was taken over by the CER in 1890. The