[citation needed][a][citation needed] The precise details of the original 1834 trackwork may be uncertain, but a diagram from 1835 shows three platformed tracks each terminating in linked 10 feet (3.0 m) connecting turntables and a non-platformed carriage siding, all set well back from Westland Row entrance.

The departure track was on the side of the middle line of pillars supporting the two-span roof that extended as far as Cumberland Street.

The track was serviced by a departure platform that allowed separate access for first-class passengers at the southern end of the train.

The station entrance from Westland Row contained two sets of stairs to the upper platform level.

There was also a (horse-drawn) cab entrance and ramp to the far end of the arrival platform which would have been convenient for first-class passengers.

[7] Patronage grew to 4.5 million passengers per annum in the late 1870s with powers and land obtained for the enlargement of the station.

[citation needed] The station was extensively rebuilt for the opening of the City of Dublin Junction Railway in 1891.

An 1893 and 1924 diagram show the platforms numbered as follows:[10][8][b] Prior to 1936, the station handled commuter services and boat trains.

Great Southern Railways (GSR) facilitated this by installing colour light signalling in 1937 allowing reversible working for the main platforms.

[citation needed] A very small number of passenger services to Heuston or its mainline continued to pass through Pearse station until the about the time of the closure of the Dún Laoghaire pier branch around 1989.

[13][c] The bay platforms have been used as a set for movies including Johnny Nobody, Michael Collins, Angela's Ashes, Nora and the 2005 remake Lassie.

The former platform 1 continued to exist but was unsuitable for modern passenger trains and was used as a siding before conversion to a car park.

An additional Southbound entrance (Pearse Street and Trinity Bio Science) was opened on 9 April 2013.

[15] The completion of the Irish Rail City Centre Re-signalling Project[16] has seen an increase in the number of Northern and Maynooth line suburban trains stopping.

This was made possible by increasing the ability of the signalling system in the city centre to operate 20 trains per hour in both directions instead of the previous 8.