Branches and subsidiary routes
In the early part of 1844, with the main line nearly complete, the B&ER promoted a branch from near Taunton to Yeovil and Weymouth. At the same time the GWR decided to promote several branches from its main line, and during the course of 1844 the GWR endeavoured to build a line from near Chippenham to Yeovil and Weymouth: this became the Wilts, Somerset and Weymouth Railway. The B&ER shortened its intended branch to run to Yeovil only.
In the 1845 parliamentary session, the B&ER obtained authorisation in the (8 & 9 Vict. c. clv) for the Yeovil branch, branches to Clevedon and Tiverton, and a direct junction line at Bristol connecting its line with the GWR. Early the same year the company had at last constructed its own Bristol terminus (authorised in the original act of Parliament); this was at right angles to the GWR station. The connecting line formed an arc by-passing both Bristol stations, and an "express platform" was built on it to allow through passenger trains to make a station call; both directions of trains used the single platform. The Tiverton branch proved especially contentious due to the determined opposition of the Grand Western Canal, which foresaw the end of any income; when the parliamentary opposition was overcome, the canal company offered every obstruction in the construction of the railway crossing.[6]
The Clevedon branch line (3+1/2 mi from Clevedon Road, renamed Yatton, was opened to traffic on 28 July 1847, and the Tiverton branch from Tiverton Road, renamed Tiverton Junction, opened on 12 June 1848. The Tiverton branch passed under the Grand Western Canal, and Brunel constructed Halberton aqueduct to carry the canal over the new line.
Work was also started on the Yeovil branch from Durston, but due to the new commitment to expenditure on rolling stock, the work was not pressed to completion and opening was delayed by several years. The work was resumed in 1852 and pressed ahead; the whole line to a Yeovil station at Hendford was opened to passengers on 1 October 1853, and to goods on 26 October 1853. With the approach of the Wilts, Somerset and Weymouth line of the GWR, the B&ER branch was extended from Hendford across Yeovil to the GWR station at Pen Mill; this extension opened on 2 February 1857, the same day as the GWR line from Frome to Yeovil.
The West Somerset Railway was authorised in 1857 to make a line from the B&ER west of Taunton to Watchet, where there was a small harbour. There were serious difficulties in raising the necessary capital (£140,000) and the line finally opened on 31 March 1862 for passengers; goods traffic was handled from August 1862. The line was leased to the B&ER in perpetuity. The West Somerset Railway was extended to Minehead by the Minehead Railway, opening as a broad gauge single line on 16 July 1874.It was worked by the B&ER.
The Somerset Central Railway was authorised on 17 June 1852. It was friendly to the B&ER which had subscribed a considerable amount of its capital. It was to build from Highbridge Wharf, crossing the B&ER main line there, and running to Glastonbury, mostly along the route of the Glastonbury Canal. It was a broad gauge single line 12+1/2 mi long; when it opened on 28 August 1854 it was leased to the B&ER for a seven-year term. While the lease was in force, it was extended to Burnham-on-Sea at the north-west end (on 3 May 1858) and to Wells at the south-east end (on 15 March 1859), making 19+1/4 mi in total.
Power had been obtained to extend to Bruton on the GWR in 1856. The Dorset Central Railway, a narrow gauge line, also obtained powers to join the Somerset Central near Bruton. On 3 February 1862 the lines were completed and the Somerset Central began operating the entire line, on the narrow gauge. In August 1862, the two lines joined to form the Somerset and Dorset Railway. The junction with the GWR was never built, and the entire line had abandoned any allegiance to the B&ER.[7]
The Chard and Taunton Railway obtained authorisation in 1861, but was unable to raise the capital needed; the B&ER took over the powers and opened the single line branch to passengers on 11 September 1866, and to goods in March 1867. The Chard station was joint with the LSWR, who had a branch from their main line at Chard Junction.
The Portishead branch was built by the Bristol and Portishead Pier and Railway Company, and opened on 18 April 1867. The B&ER worked it but it was maintained by the building company. It was a broad gauge single line.
The Somerset and Dorset Railway proposed a line from Yatton to Wells in opposing a B&ER scheme for a Wells branch; by negotiation the B&ER took over the Yatton to Wells scheme, and the broad gauge line was opened on 3 August 1869 as far as Cheddar, and extended to a station at Tucker Street in Wells on 5 April 1870. The new line made a physical connection with the Somerset and Dorset Railway there, but safety concerns led to a prohibition on through passenger working to the GWR line to the south. The development of this issue is discussed in the article Cheddar Valley Line.
The Devon and Somerset Railway obtained authorisation to build from Watchet Junction (later Norton Fitzwarren) to Barnstaple, in 1864. The company found great difficulty in raising the necessary finance, but opened to Wiveliscombe on 8 June 1871, and throughout on 1 November 1873. The line was broad gauge and single, with heavy gradients. It was worked by the B&ER for half the gross receipts.
A short line called the Bristol Harbour Railway was opened from the junction of the B&ER and Great Western Railway (GWR) at Temple Meads to the Floating Harbour in Bristol on 11 March 1872. It was 3/4 mi long, and included a tunnel, a long viaduct and an opening bridge. It was constructed by the GWR and B&ER jointly, with much work being undertaken at the harbour by the Corporation of Bristol. It was a single line, and mixed gauge, although neither the GWR nor the B&ER had narrow gauge trackage in the area. It was soon decided to extend to Wapping Wharf, where more space was available, and this was authorised in 1873, but the opening took place after the B&ER amalgamated.