Category: Carrum

Changes to the Patterson River rail bridge would NOT require a closure of the Frankston line for up to six months

A new road bridge connecting Station Street to Station Street over the Patterson River is planned.
This can be used as a temporary rail by-pass whilst any changes to the Patterson River rail bridge are completed.

Carrum temporary rail by-pass
Carrum temporary rail by-pass

Allowing for a safety fence 3m from the by-pass rail track access to properties either side of Patterson River remain unaffected.
This will require a stronger bridge for the train use but any additional height caused by deeper spans can be accommodated with the more lenient road design rules and/or service road use.
And this is working on a two-track by-pass where train schedules will not have to be altered.

But even with a single-track by-pass all trains can be accommodated ~

Carrum: Lowering the Patterson River rail bridge would NOT impact boat access.

Carrum Boats only use the two mid spans.
Carrum: Boats only use the two mid spans.
The southern span can be lowered without impacting on boat access.
The southern span can be lowered without impacting on boat access.

This effectively increases the distance from the Patterson River to McLeod Road.
Additionally, the vertical gradient transition from level to – 2% (or more) can be achieved over the
mid spans of the bridge improving the effectiveness of lowering the southern span and not impacting on boat clearance.

Rail under road in Carrum

Carrum Station Options for a Trench

LXRA say:
A rail under road design is not possible in Carrum due to:
1. The distance between the Patterson River and McLeod Road is not long enough to provide train clearance under the road and return to ground level before the Patterson River rail bridge at an incline that would allow trains to run safely.
2. A steeper incline would not meet metro and freight rail standards for safe operation.
3. Changes to the Patterson River rail bridge would require a closure of the Frankston line for up to six months, which is not feasible for commuters or freight operators.
4. Lowering the Patterson River rail bridge would impact boat access.
5. Moving the McLeod Road connection further south would increase congestion, reduce traffic flow and move the station 350 metres south away from shops and services.

We will look at each of these points but not in the order given above.

See full responce in PDF document – March 2017 summary of options.

Lowering the Patterson River rail bridge would impact boat access.

Changes to the Patterson River rail bridge would require a closure of the Frankston line for up to six months, which is not feasible for commuters or freight operators.