Double tracking will be extended from McKays Crossing and electrification from Paraparaumu so commuter trains can travel to and from Waikanae.
Having a second track means trains can travel in both directions simultaneously which will improve the frequency of services and in time, allow regular trips to and from Waikanae every 15 minutes.
Additional storage for the new Matangi trains will be needed at Paekakariki and Waikanae to allow for efficient train movements around the region. There will also be improvements to the stations at Paraparaumu and Waikanae.
Most of the construction is taking place at a safe distance from the railway lines and State Highway One. To cause the minimum disruption to road and rail commuters and freight traffic, earthworks close to the railway line is scheduled for off-peak periods, at night or on weekends.
Construction timeline
From December 2008
- Initial ground preparation to widen the railway foundation to make room for a second set of tracks.
- In some areas the line crosses swampy land and preliminary earthworks will need to settle for up to a year before new rails can be laid. This is called ‘pre-loading’.
From February 2009
- Construction of the new foundation for the wider railway, away from the pre-load areas.
- This includes installion of steel traction poles to carry the new overhead wires needed for electrified trains.
During 2010
- Build the rail formation – the ballast, sleepers and rail, before the overhead wires are attached and signalling equipment installed.
- The new track will be progressively commissioned in sections.