The line continued to Woodbrook Halt (1910), which served the cricket ground on Sir Stanley Cochrane's Woodbrook estate. The Woodbrook Golf Club and Cricket Grounds later used this halt between 1920 and 1960. The summit of the line was at Lakelands between Dundrum and Stillorgan. One of the major engineering feats on the line was the Milltown Viaduct, or "Nine Arches", which still stands today over the River Dodder. The 5-arched Bride's Glen viaduct spans the Loughlinstown River valley and Bride's Glen Rd. Following the Beddy Report of 1957, CIÉ decided to close all the non-profitable rural railway branch lines including the Harcourt Street line. In October 1958, CIÉ gave public notice of the closure. Many objections were raised by local people but to no avail. The last train, CIÉ 2600 Class AEC railcar number 2652, left Harcourt Street at 4:25pm on 31 December 1958. One interesting event that occurred was that when this train began crossing The Nine Arches Viaduct between Milltown and Dundrum, the staff of the nearby laundry turned out in force and blew sirens as the train crossed the viaduct for the last time. Following the closure, many of the stations were sold by public auction. The tracks were lifted between 1 January 1959 and September 1960. The route corridor remained mostly in place until the 2000s. The section between Grand Parade and the old "Stillorgan" station at Sandyford was chosen for use by the Luas light rail system whose Green Line opened in 2004. The line crosses the Dundrum bypass on the new William Dargan cable-stayed bridge. An extension of the Luas to Cherrywood opened for passenger service on Saturday 16 October 2010, using most of the old railway alignment. The route leaves the old alignment after the Sandyford Depot, crosses the M50 motorway and runs down Ballyogan Road, before crossing the M50 again, and re-joining the original alignment before the Carrickmines station. The Railway Procurement Agency announced in 2009 that the Brennanstown stop would not open due to lack of local development. Beyond Brennanstown, the route diverges slightly from the old alignment and enters a new tunnel, before ending at the Brides Glen Luas stop in Cherrywood Business Park. Several bridges, stations and much of the alignment have survived. These include the Harcourt Street Station, Dundrum, Stillorgan, Carrickmines and Shankill stations, Woodbrook Halt, the Nine Arches and Bride's Glen viaducts.