The Wirral line was not originally conceived as a single route, but uses several railway lines built by individual private
railway companies. Even after the
Grouping Act of 1921, three of the
Big Four companies were active on the Wirral Peninsula until the
nationalisation of the railways in 1948, when all four were absorbed into
British Railways. During the 1970s, under British Rail, the Merseyrail network was developed. but the railway company itself was not incorporated until 12 July 1837, after a previous
bill had been rejected a few months earlier. Between 1830 and 1837, an alternative route was surveyed by
Francis Giles, The total cost of the railway was around £513,000, more than double the original estimate of £250,000, and the full length of opened as a
single-track line on 23 September 1840 between temporary termini at
Grange Lane in
Birkenhead and Brook Street in Chester, close to the present location of
Chester railway station. The inaugural service was operated by locomotive "The Wirral", taking 50minutes to travel the length of the line from Birkenhead. Chester General station opened a year later on 1 August 1848, still extant today as the southern terminus of the Wirral line and renamed to simply "Chester" in 1969 following the closure of Chester's other station,
Chester Northgate. In 1859, the Birkenhead, Lancashire and Cheshire Junction Railway shortened its name to become the Birkenhead Railway, but was taken over in 1860 by the
Great Western Railway (GWR) and the
London and North Western Railway (LNWR), who operated the line as a
joint affair known as the Birkenhead Joint Railway.
Wirral Railway . On 28 July 1863, the Hoylake Railway was incorporated due to the Hoylake Railway Act 1863 being granted
royal assent, which authorised the construction of a railway line between Birkenhead and
Hoylake. A single track line was constructed between and (adjacent to Wallasey Bridge Road), and the railway opened to passengers on 2 July 1866. On 18 July 1881, the railway became the
Seacombe, Hoylake & Deeside Railway Company and acts were passed for lines to ,
Deeside and
Warren Drive, later extended to New Brighton. The planned NW&LR route would pass through the heart of the Wirral Peninsula from on the Wirral Railway to in
Flintshire,
Wales where it would meet the
Chester and Connah's Quay Railway and the
Wrexham, Mold and Connah's Quay Railway (WM&CQR). and due to a high level of goods traffic the GCR opened a new connection to the docks in 1907 as part of what forms the now-disused
Birkenhead Dock Branch. On 22 December 1869, Fox held a meeting with Liverpool businessmen and merchants where it was decided that the pneumatic single track railway would be substituted with a conventional steam double track line. Powers for the Mersey Railway Company to build a steam railway were granted in 1871 as well as those to extend the original planned route to connect with the joint
Great Western and
London and North Western railway at . A contract was made with
John Dickson to raise the necessary funding and then construct the railway, but he soon became bankrupt. Work on constructing the tunnel did not commence until December 1879 when a preliminary contract was entered with
Major Samuel Isaac, a London businessman, to dig a pilot tunnel for determining the nature of the strata beneath the Mersey. Isaac subcontracted the construction work to
John Waddell & Sons of
Edinburgh who appointed
James Brunlees and
Charles Douglas Fox, eldest son of Sir Charles Fox, as engineers in chief. and as a result construction began in August 1881, before the pilot bore had been completed. A total of three tunnels were constructedthe main railway tunnel, a ventilation tunnel and a drainage tunnel. The railway tunnel was horseshoe shaped Upon opening, the railway ran from James Street in Liverpool to Green Lane in Birkenhead via intermediate stations at and . A branch from Hamilton Square to opened on 2 January 1888, where it connected with the Seacombe, Hoylake & Deeside Railway, later to become the Wirral Railway. Once this extension was complete, passengers were able to travel from Hoylake to Liverpool without changing trains as only the locomotives were changed for the Mersey Railway tunnelled section. On 16 June 1891, an extension was opened from Green Lane to Rock Ferry for connections with the Birkenhead Joint Railway. A further extension opened in Liverpool on 11 January 1892, from James Street to increasing the total length of the railway to . Not long afterwards,
George Westinghouse, an engineer and inventor, offered to fund and carry out electrification work on the line. By the end of April 1903, and at a cost of £300,000, the electrification work was complete, making the railway Britain's first steam-operated line to be converted to electric traction. The vehicles were built in Birmingham by
Metropolitan Cammell and the
Birmingham Railway Carriage and Wagon Company, requirement for rail stock used in tunnelled sections. The Merseyside Passenger Transport Authority, later named Merseytravel, was formed in 1969 with representatives from all Merseyside local authorities taking responsibility for the local rail network, henceforth known as 'Merseyrail'. At that time, the lines out of Liverpool Exchange, Liverpool Central Low Level and Liverpool Lime Street stations were completely separate and were given the names of 'Northern line', 'Wirral line' and 'City line' respectively. The new Wirral line was to have a loop tunnel under Liverpool's city centre which would be an extension of the Mersey Railway tunnel. This arrangement meant trains would only terminate in the Wirral. Trains would leave Wirral terminus stations, run into Liverpool's city centre and loop back out. Four underground stations would be on this loop under Liverpool's city centre. A further underground Link Tunnel connection between a new Moorfields through underground station and Liverpool Central underground creating a Liverpool north-south crossrail was planned. Moorfields would replace Liverpool Exchange terminus station. The Mersey Railway Extensions Act was passed in 1968 to authorise the first stage of these improvements. The
Transport Act 1968 established the Merseyside Passenger Transport Authority to control policy on public transport in the conurbation, and the
Merseyside Passenger Transport Executive to manage ferry services and to make agreements with the
National Bus Company and
British Railways Board. The one track Loop Tunnel was designed to allow trains to run in a clockwise direction beneath Liverpool's city centre. It diverged from the Mersey Railway tunnel beneath
Mann Island extending the short Huskisson Dock branch tunnel. This short tunnel was designed to extend to Huskinson Dock for freight purposes, however the works never materialized. A new platform was built at
James Street. From James Street the tunnel continued to new deep-level platforms at Moorfields, Liverpool Lime Street and Liverpool Central before rejoining the existing Mersey Railway tunnel beneath the
Queen Victoria monument to allow trains to continue serving one of the existing platforms at James Street. The existing 1886 tunnel from James Street to Liverpool central was relegated to shunting purposes. The Loop is a
single-track tunnel, in length, in diameter, and was driven during 1972 and 1973 through mainly sandstone rock. The depth of the tunnel varies between and lined with concrete. To bore the tunnel, three new
DOSCO electro-hydraulic excavating machines were used, giving a maximum work rate of per week. In addition to the construction of the Loop Tunnel, a
burrowing junction was constructed at , taking the line towards Birkenhead Park beneath the Rock Ferry lines. This would allow peak-time frequencies to be increased by removing interfering train paths at the
flat crossing. A new platform was built at Hamilton Square for this diversion, and the new tunnel is in length. In 1974,
Merseyside was created, with
Merseyside County Council taking over the responsibilities of the Merseyside Passenger Transport Authority. The
Northern line, including the new Link Tunnel between Moorfields and the original Mersey Railway platforms at Liverpool Central, was opened to passengers on 2 May 1977 and the Loop Tunnel opened a week later with Wirral line trains serving Rock Ferry, New Brighton and West Kirby. The first phase of the
Merseyrail development was formally opened by
Queen Elizabeth II on 25 October 1978, when she visited Liverpool Central station and rode to on the Northern line. Due to a stock shortage in the
Southern Region, the new four-car trains were first introduced to operate inner-suburban services from . This allowed the few remaining
4-SUB trains to be withdrawn so that their electrical equipment could be reclaimed for the new
Class 455 units. In 1981, the first two Class 508 units were sent north to Birkenhead, and three more were transferred in February 1983 as Class 455s began to enter service. The remaining Class 508 units were reduced to three carriages and delivered to Birkenhead by December 1984, allowing the Class 503 units to be withdrawn. Electric services through to Liverpool from Chester commenced on 3 September 1993 and from Ellesmere Port on 29 May 1994. The franchise was then run as
Arriva Trains Merseyside. In 2003,
Merseytravel took over responsibility for the Merseyrail franchise from the
Strategic Rail Authority. Merseyrail Electrics 2002 Ltd was established by Serco-Abellio and the franchise is run under the "Merseyrail" brand with a 25-year contract ending in July 2028 and a review taking place every five years in line with the Merseyside Local Transport Plan. ==Infrastructure==