Ernakulam Jn was first opened as Ernakulam South in 1932 when the metre gauge line then terminating at Ernakulam Terminus railway station was extended from Pachalam to the Cochin Harbor Terminus Station on the Willingdon Island for proximity to the Kochi Port. Ernakulam North, Perumanur, Mattanchery Halt and CHTS were the newly opened stations on the route. In 1946 the station was converted into broad gauge as part of the Shoranur-CHTS line, linking it directly to the rest of India via the Mangalore-Jolarpet mainline at Shoranur Jn. In 1956 the Ernakulam-Kottayam metre gauge line was opened and further extended to Kollam in 1958, joining to the Kollam-Trivandrum line, connecting Ernakulam with Trivandrum for the first time. Since the opening of the Kottayam line made it a junction, Ernakulam South was renamed Ernakulam Junction, and Ernakulam North was renamed Ernakulam Town. This was what made Ernakulam Jn rise to prominence, which was until then just a small wayside station en route to the much busier Cochin Harbour Terminus station. Until 1979 when the Kottayam line was converted into broad gauge, ERS had both broad and metre gauge tracks. As the coastal line to Alappuzha was opened in 1989, Ernakulam Jn rose to the status of the most premier railway station in central Kerala.
Layout
Ernakulam Jn is a railway junction with lines branching off from it to four different directions:
North towards Chennai/Bangalore and Mumbai
South towards Thiruvananthapuram via Alappuzha-Kayamkulam
South-west towards Willingdon Island and Cochin Harbour Terminus
East towards Thiruvananthapuram via Kottayam-Kayamkulam
The station has six platforms to handle long distance trains and local trains and two entrances. Its A1 classification is the highest a station can achieve on Indian Railways. It does have all amenities expected out of a major junction including a paid air-conditioned lounge with free WiFi, a library, rest room, children's play areas etc. However, the station lacks the spread-out roominess and large built-up area of similarly large stations. Ernakulam Junction was the first railway station in Kerala to have an escalator. It was installed on 9 September 2013. Currently all its platforms are served by escalators.