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Werribee Street, Werribee - Technical Brochure

02 Jul 2019

Selecting the best design

Artists impression of the preferred design solution for Werribee Street, Werribee

Preferred design: A rail bridge over Werribee Street *All images and maps show structure only. Design subject to change.

Understanding the designs

Removing the Werribee Street level crossing will improve traffic flow and allow for potential future expansion of the rail line.

The Werribee Street crossing provides a critical connection between the north and south sides of the train line and is a key arterial route. There are two feasible designs for the level crossing removal at Werribee Street. Based on technical considerations and achieving positive long-term outcomes, we’ve identified a preferred design.

Under the preferred design, a rail bridge would be built over Werribee Street. This design takes advantage of Wyndham City Council’s multi-million dollar improvements at Wyndham Park and can be constructed with minimal disruption to road users, opening extra space below the rail line for the community to enjoy.

The other feasible design is to build a new road bridge over the rail line to the west of the existing level crossing, connecting Bulban Road and the Princes Highway. This design would result in two elevated roundabouts to allow for all traffic movements. This brochure explains the designs that were ruled out and the criteria we use to assess designs.

Understanding the site

Each level crossing has its own set of characteristics to consider when preparing to remove it. At Werribee Street, the site is close to residential and commercial properties as well as Wyndham Park. Critical services – such as the oil pipeline – and other essential utilities run underground alongside the rail corridor.

As well as these constraints, there are several key criteria we use to decide if a design should be investigated. Environmental, technical and community considerations all contribute to the design put forward. Some of our key considerations in selecting a removal method are:

  • traffic movements
  • disruption to train services and road users
  • surrounding residential land use and impact to retail areas
  • impacts to utilities and services
  • ground and environment conditions
  • land topography.

When assessing designs, we also consider construction impacts; whether we will need to acquire retail or residential land; and the environmental impact of the design. Another factor is whether the design allows for additional train tracks to be laid in the future.

Designs that are not feasible

The following is a summary of designs that were considered and ruled out.

Rail under road

To build a rail trench that is future proofed for potential additional train tracks, it would be about 50 metres wide, resulting in impacts to residential properties and park lands.

This design would not enhance Wyndham City Council's multimillion dollar investment into Wyndham Park as no new open space would be available. This design would also impact the critical oil pipeline, delaying construction by up to two years.

Werribee map rail under road design

Road over rail

To comply with design standards, the new road bridge would need to start rising in front of homes and businesses on Cottrell Street, blocking access to these properties.

Property acquisition would be likely. As the structure would be built over the existing level crossing site, road traffic would need to be moved away from the area. This would cause significant delays during the construction period.

Werribee map road over rail design option

Road under rail

To comply with design standards, the new road trench would begin to lower in front of homes and businesses on Cottrell Street, blocking access to these properties.

Property acquisition would be likely. As the structure would be built under the existing level crossing site, road traffic would need to be moved away from the area. This would cause significant delays during the construction period.

This design would also impact the critical oil pipeline, delaying construction by up to two years.

Werribee map road under rail design

Key Impact Assessment

We applied the following key criteria to each design outlined below. Assessing these allows us to determine which solutions are feasible for each site.

Werribee Street

Key considerations/criteria to meet

Rail under the road

Road over rail at existing level crossing site

Road under the rail

Rail over the road

Road over rail to the west of the level crossing

Property acquisition

No property acquisition required

Likely to require compulsory acquisition of commercial and residential land

Likely to require compulsory acquisition of commercial and residential land

No property acquisition required

May require property acquisition

Impact to retail and activity centre

Improved access to Werribee CBD

Impacts homes and traders along Cottrell Street and Princes Highway

Impacts homes and traders along Cottrell Street and Princes Highway

Improved access to Werribee CBD and provides new open space

May increase road travel time to Werribee CBD

Impact to critical oil pipeline and other utilities

Major impact, up to two year construction delay

No impact

Major impact, up to two year construction delay

No impact

Major impact, up to two year construction delay

Compliance with design standards

Distance too short for rail line to rise to ground level before Werribee River bridges to comply with standards

Structure would need to take up a large footprint to comply with design standards

Distance too short for the road to rise to ground level before Werribee River to comply with design standards

Complies with design standards

Complies with design standards

Future proofing (includes transport and urban growth)

Does not allow for potential additional train tracks

Does allow for potential additional train tracks

Does allow for potential additional train tracks

Does allow for potential additional train tracks with new bridges

Does allow for potential additional train tracks

Construction impacts

Major road and freight disruptions

Major road and freight disruptions

Major road disruptions, minimal rail disruptions

Minor road disruptions, disruptions

Major road and freight disruptions

Overall assessment outcome

No longer under consideration

No longer under consideration

No longer under consideration

Preferred design

The other feasible design

Project timeline

DateProgress
2018

Early technical investigations and community engagement

2019

Present designs and community engagement

Late 2019 Final design confirmed
2020

Construction begins

2022 Project complete

View the PDF version of this technical brochure PDF, 468.8 KB

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