project was suspended on the northern line. Work continued between Roma Street and Corinda as the signalling contract had been already let. The northern line stations of Nundah and Toombul were constructed within this time frame, and Eagle Junction shortly after. The quadruplicated Corinda to Roma Street line opened on 1 December 1963, providing greater flexibility in the provision of peak hour suburban services and allowing the passage of long distance goods and livestock trains which travelled through these suburban networks to the main western line. During the 1960s a number of rail lines were decommissioned as government funds were geared towards the provision of better roads, but by the end of that decade it was clear that public transport also needed to be upgraded. A report delivered in 1970 recommended the electrification of the suburban railway network, the construction of the Merivale Street Bridge and a range of operational improvements, including the creation of a separate public transport authority. By 8 May 1979 the overhead lines between Corinda and Roma Street were switched on as part of the electrification project between Darra and Ferny Grove, which was the first section of the suburban network to be completed. Alterations to the various elements of Graceville railway station have been minimal since its completion in 1959. Changes to the building include carpeting of the office floor, the addition of safety screens to the openings above the stairway and further enclosure of what was the telephone booth at the southern end. The steel-framed awnings originally had ribbed panels dividing the two sides of the timber seating, which have now been removed, as have those panels which divided the various seating bays. Graceville, Chelmer and Sherwood stations were repainted in 1998 with only the former being painted the corporate Queensland Rail colours of maroon and grey. Various ticket machines, a telephone and other signs have been added. Of the thirteen stations designed and built in the 1950s and early 1960s as part of the original Queensland Railways electrification and quadruplication projects, Graceville, which remains substantially intact, best exemplifies the Modernist-influenced design concepts employed. It is the most intact of the four butterfly-roofed platform stations, with Chelmer having been altered somewhat, and Eagle Junction and Nundah altered substantially. Of the four flat-roofed platform stations Sherwood has been altered partially, Milton has been altered substantially, and Indooroopilly and Toowong have been rebuilt. Of the five