and re-erected at Muswellbrook in 1918. The subway underpass was constructed in 1928 as a replacement for the level crossing at the Sydney end of the station. An overbridge was built on Bridge Street, replacing the level crossing. Meanwhile, a locomotive depot had been built in 1943. In 1977 a coal mine at Ulan was opened and the railway was extended from Sandy Hollow to Ulan in 1982 to transport coal to Newcastle, via Muswellbrook. For a number of years in the 1980s, the passenger services were replaced by road coaches while the line was upgraded. Rail services were restored on 14 March 1988. In 2007 approval was given for 2-staged refurbishment of the railway refreshment room as a museum; provision of stair & entry ramp and install lift, then for construction of a stand-alone visitor information centre, storeroom, toilets, deck & landscaping. In 2011 approval was given to demolish the disused signal box. Muswellbrook formerly had an extensive freight yard including a locomotive roundhouse. The Merriwa section of the Ulan line branches off the Main Northern line at the northern end of the yard. In early 2007, the Australian Rail Track Corporation commenced work to rationalise the tracks within the yard and add a passing loop long enough to accommodate long trains. Upon completion, freight trains are to pass through the yard area at , improving travel times. In March 2009, duplication of the Main Northern line reached Muswellbrook station, the completion of a project to upgrade the line to double track between Antiene and Muswellbrook to improve coal haulage capacity. Platforms & services The station has one platform and a disused dock platform at the southern end. Muswelbrook is serviced by NSW TrainLink Hunter Line services travelling between Newcastle and Scone. It is also served by NSW TrainLink Xplorer services from Sydney to Armidale and Moree. Description The station complex comprises a type 3, second class brick station building, completed in 1869. The original station building was a small well proportioned brick structure with simple stone lintels and hipped roof. It is a rendered brick building with a hipped roof of corrugated, galvanised iron (originally slate). The building is elevated above street level. Its entrance is via steps leading to a stone flagged verandah with a hipped roof of corrugated galvanised iron, supported by timber posts. The verandah roof to the street is original. The doors are timber