This enabled Southend trains to and from platforms 4 and 5 to dive-under the main line thus eliminating conflicting movements. The bi-directional loop line connects to the Southend line at Mountnessing Junction. The lines from London Liverpool Street and London Fenchurch Street (via Gas Factory Junction and Bow Junction) to Shenfield were electrified at 1500 V DC overhead system in 1949. This was converted to 6.5 kV AC in 1960. Gidea Park to Shenfield was converted to 25 kV AC in 1976. Liverpool Street to Gidea Park was converted to 25 kV AC in 1980. Oyster card readers were installed for pay-as-you-go journeys in 2013. Today, Shenfield is served by fast trains on the main line towards London, and it is the north-eastern terminus of the Elizabeth line. At peak hours the frequency of service will increase from eight trains per hour to 12, necessitating the construction of a new 210-metre long platform 6, which was built to the north of platform 5, replacing one of the existing three western sidings. The two remaining western sidings and three new eastern sidings are also used by the Elizabeth line. Platforms 1 to 5 have an operational length for 12 carriages, platform 6 for 10 carriages. Services The typical off-peak service pattern at Shenfield is: 7 trains per hour (tph) to London Liverpool Street, of which: 5 call at Stratford and Liverpool Street, 2 call at Romford, Stratford and Liverpool Street 8 tph to Paddington calling at all stations on the Elizabeth line 3 tph to Southend Victoria, calling at all stations to Southend Victoria; 1 tph to , calling at Ingatestone, Chelmsford, Witham, then all stations to Braintree; 1 tph to Clacton-on-Sea, calling at Ingatestone, Chelmsford, Witham, Colchester, Wivenhoe, Thorpe-le-Soken and Clacton-on-Sea; 1 tph to Colchester Town, calling at Chelmsford, Witham then all stations to Colchester Town; 1 tph to Ipswich, calling at Chelmsford then all stations to Ipswich. During peak times, service frequencies may be increased and calling patterns varied. Service frequencies are generally reduced on Sundays. References External links Excel file displaying National Rail station usage information for 2005/06 Railway stations in Essex DfT Category B stations Transport in the Borough of Brentwood Former Great Eastern Railway stations Greater Anglia franchise railway stations Railway stations served by the Elizabeth line William Neville Ashbee railway stations Railway stations in Great Britain opened in 1843 Railway stations in Great Britain closed