New signals and locations for longer trains
longer crossing loops
New Communication with Train control
The Melbourne-Perth line will see some work going in to it at Murray Bridge (the bridge itself, not around the area). Apparently, the bridge will have the trough filled with ballast and the current fish plated rails over the bridge will be repaced with welded rail of 60kg/m. There will also be a pedestrian walk way fitted along side the track. (A good new photo oppurtunity! ).
Historic Bridge Set for Major Upgrade
Built and opened by the South Australian Railways in 1926, the classic and impressive bridge over the River Murray at Murray Bridge, located on the main line between Adelaide and Melbourne, is about to undergo an ‘extreme make over’.
Adelaide based Australian Rail Track Corporation has been awarded $2m of Commonwealth Government funding to upgrade the Murray River rail bridge. Part of this work is to replace the existing rail on the bridge, to continuously welded rail (CWR) 60kg/m head hardened rail (HH), which is currently fish-plated and upgrade the bridge structure to a formal ballasted deck bridge. This aspect of the project will see the removal of a huge number of bridge timbers and track timer sleepers, with the use of standard concrete sleepers and ballasting.
A major tender, about to be let by ARTC, will include the design and construction elements, including the necessary rail safe-working of the construction work involved with this project. Another aspect of this tender has a requirement to safely manage ARTC’s assets and enable all trains to continue to operate ‘as usual’ over the bridge.
The River Murray railway bridge is Heritage Listed by the SA State Heritage Unit with the Department of Environment and Heritage and therefore the proposed upgrade works will need to be discussed and agreed to between the tenderer and State Government.
The project works comprise modifications to the existing structure to create a ballasted deck structure, including the removal of the existing jointed rail, plates & timber transoms, and replacement with new 60kg/m HH rail, guardrails, concrete sleepers and ballast. In addition the work includes the removal of the guard rails on the approaches to the structure, installation of a new deck capable of supporting the ballast and a pedestrian walkway throughout the entire structure.
Design requirements, in accordance with all relevant standards will incorporate a working life of 100 years and a structure rating of 30 tonne axle loads.
Other associated works to be completed include the removal of the existing signaling pole line on the current road bridge, and replacement with coded track circuits on the railway bridge, and corrosion protection works, associated with the removal of pigeon perching/roosting opportunities within the structure – by the installation of suitable netting, spikes or electrified circuits.
The entire project, starting later this month, is due for completion by 30 June 2005.