, 2012 The first section of the line, to Northgate (and onto
Sandgate) opened in 1882. In 1883 the Queensland government decided to link Gladstone to Brisbane by railway, and eventually decided upon Northgate as the junction for the new line. The alignment from Roma St to Bowen Hills was via
Normanby (today known as the Exhibition line), and this remained the case until the dual track line via Central opened in 1890. The
Queensland Government called tenders for construction of the new line in 1886, with the contractor undertaking works "energetically", and despite delays due to the late arrival of bridge beams, the line was unofficially opened on 11 June 1888, with the official opening on 16 June 1888. The next section of the
North Coast line to Landsborough opened in 1890. The section from Bowen Hills to Eagle Junction was duplicated in 1886, with the section to Northgate duplicated in 1890, and on to Caboolture by 1917. The section from Roma St to Bowen Hills was electrified in 1979, to Northgate in 1982, to Petrie in 1983 and to Caboolture in 1986. The growth in patronage as a result of electrification resulted in the quadruplication of the Roma St-Northgate section in 1996, including 2 pairs of single track tunnels and the realisation of the use of the Bowen Hills tunnel widened 20 years earlier. Some of the roadbed and bridge abutments had been built in the 1950s before the original quadruplication scheme was abandoned. A third line has been added as far as Lawnton, which has been extended to Petrie as part of the
Redcliffe Peninsula line, which opened on 4 October 2016. Following the opening of the Redcliffe Peninsula line, a decision was made that all services on the Caboolture line would run express between Petrie and Bowen Hills, stopping only at Northgate and Eagle Junction. Stations between Petrie and Northgate would be serviced by the new Redcliffe Peninsula services while stations between Northgate and Bowen Hills would continue to be serviced by other existing services. == Line guide and services ==