single track section between Mitchelton and Ferny Grove was duplicated, including an upgraded Ferny Grove station, an additional 1000 car parking spaces and construction of a new bus interchange. Line guide, frequency and services Typical service frequency on the Ferny Grove Line is four trains per hour (every 15 minutes) on weekdays and two trains per hour (every 30 minutes) at night and on weekends, increasing to 8 trains per hour (every 7.5 minutes) during weekday peak times for faster travel times for commuters working in the Brisbane central business district. Most services stop at all stations to Roma Street railway station. The typical travel time between Ferny Grove and Brisbane City is approximately 31 minutes (to Central). Ferny Grove line services typically continue as Beenleigh line services. Passengers for and from the Airport, Caboolture, Doomben, Nambour and Gympie North and Shorncliffe lines change at Bowen Hills, and all other lines at Roma Street. References External links TransLink Brisbane railway lines Public transport in Brisbane 3 ft 6 in gauge railways in Australia