Western Railway was established on 5th November, 1951 by the merger Bombay, Baroda and Central India Railway along with other State Railways like Saurashtra, Rajputana and Jaipur. Bombay, Baroda and Central India are known as the forerunner of Western Railways that started in 1855 and constructed a broad gauge track of about 29 mile starting from Ankleshwar and ending at Utran in Gujarat. Later, in 1864 the same track was extended up to Mumbai.
After extending the track to Mumbai, it was further extended to the Great Indian Peninsular Railway, popularly known as Central Railway. Then a meter gauge was constructed from Delhi to Jaipur, Ajmer, and Agra. Gradually the extension and connection between various Indian cities increased and by 1900, there were nearly about 45 passenger trains under Western Railways.
The first electric train under this railway was introduced between Churchgate and Borivali in 1928. Thereafter, in 1948, many railways were operated in the western part of the country which further merged with the Saurashtra Railway. Later, in 2002, Ajmer and Jaipur divisions came under North Western Railways whereas in 2003 Kota came under the West Central Railways.
Today, Western Railways has its headquarters at Churchgate in Mumbai and is divided into six different divisions. The six divisions are Bhavnagar, Mumbai, Ratlam, Rajkot, Vadodara, and Ahmedabad. It also forms one of the 16 zones of the Indian Railways. Above all, in the present scenario, Western Railway is believed to be recognized as one of the most electrified railway network in the country.
For more information on Western Railways, you can check out its official website on http://www.wr.indianrail.gov.in/