Dundrum Luas stop

The down platform at Dundrum station in 1912

The Harcourt Street railway line was built by the Dublin, Wicklow and Wexford Railway and opened in 1854, running from a temporary terminus at Harcourt Road near the city centre to Bray. Dundrum was one of the four original intermediate stops.[2] The station was located at the side of Taney Road, which the line crossed on a bridge.

Dundrum was more elaborate than other stations on the Harcourt Street line. It had buildings on both platforms: the up (Dublin-bound) platform featured waiting rooms and a signal box.[3] The down platform was the location of the station master's house[4] and the main station building with the ticket hall.[5] This building had one storey, and its entrance from the platform was via a small portico with the roof suspended by a colonnade. This area could be used as a passenger waiting shelter.[6] The platforms were linked by both an iron footbridge and a granite subway.[7]

A short siding was located to the south of the station, allowing trains to terminate.[8]

The station building in its former derelict state

The Harcourt Street line had declined in use throughout the early 20th century and was closed by CIÉ at the end of 1958. The tracks were lifted soon after and all stations on the route were auctioned off. The waiting rooms, signal cabin, and house at Dundrum were demolished in the years that followed. The station building survived, but fell into disuse. The nearby bridge over the road was demolished in the 1970s.[9]

William Dargan Bridge

Construction of the first phase of the Luas system commenced in 2001 and concluded in 2004. The route chosen for the Green Line re-used the old Harcourt Street alignment between Charlemont and Stillorgan, and Dundrum station was rebuilt as a Luas stop. The original subway was restored, allowing it to be once again used for passage under the tracks. The surviving station building was not affected by construction, and remained at the side of the stop for many years in its derelict state. However, it has since been restored and turned into a retail unit.

In the years following the original station's closure, the roads around it were rearranged into a crossroads. An elaborate cable-stayed bridge was constructed in the place of the old road bridge. It was named the William Dargan Bridge in honour of William Dargan the engineer who built the original railway line.

In 2018, the platforms were lengthened from 45 to 55 metres. This was to accommodate the new longer trams introduced to boost capacity.[10]

Trams run every 5-10 minutes and terminate at either Parnell or Broombridge in the north, and Sandyford or Brides Glen in the south. The stop is also served by Dublin Bus routes 14, 44, 44B, and 116.[11]