What does the Aviation Road level crossing removal involve?
The project includes the separation of the railway line from the road to help improve safety and ease congestion. The project also involves building new pedestrian and cycling access from Aviation Road to Aircraft Station and through to Maher Road.
How will the crossing be removed?
We will be removing the level crossing at Aviation Road by moving the road to the east of the existing crossing and on to a new road bridge over the rail line.
The design will tie in with the existing roundabout at the intersection of Aviation Road, Railway Avenue and Triholm Avenue. The new road will rise and cross the rail line before joining Maher Road on a new alignment approximately 500 metres long.
The bridge road level will be about nine metres at the highest point with an additional three metres for protection screening.
As part of the Aviation Road project, a new pedestrian underpass will be built to provide access to Aircraft Station. The underpass will be located where the existing Aviation Road intersects the rail line.
When will the Aviation Road level crossing be removed?
construction works are planned to start in late 2018 and will take up to two
years to complete, with the level crossing set to be gone in 2020.
What will be done before construction starts?
Planning and technical investigation works got underway in late 2016 and will continue as we refine the road over rail design. These works include:
• drilling to learn about the ground conditions
• site surveys, including environmental surveys
• traffic studies
• determining where the existing service utilities are located
• stakeholder engagement
• community updates.
What options have you ruled out?
There is no one design for removing level crossings. A range of assessments need to be made when developing designs, that consider site-based constraints and risks.
Raising the rail lines above Aviation Road and lowering the rail lines into a trench have been ruled out.
Road under rail designs have also been ruled out.
Why did you rule out rail-based designs?
• Significant disruption to commuters and road users during construction
• Rail shut down for the standard gauge freight line is limited to a maximum of 60 hours in any year
• Significant impact on existing underground services, including a high-pressure oil pipeline.
• Maximum gradient for a freight line is 1.25 per cent resulting in a rail trench or rail bridge getting back to existing ground levels just before Laverton Station and Williams Landing Station
• A rail trench would require high safety fences
• A substantial amount of rock would need to be excavated during any rail shut down for a rail trench, significantly lengthening the construction period.
Why did you rule out road under designs?
Following further technical investigations, we have ruled out a road under rail design because of the challenging environment conditions including a high ground water table, very hard rock, and the presence of contaminants, as well as the location of a high pressure oil pipeline.
The combination of these challenges preclude taking the road underground and would increase the delivery of the project by approximately six months.
Why are you not including a roundabout?
Traffic survey and modelling shows that a T-intersection on the bridge is the best outcome.
The design does, however, provide turning lanes (left and right turn in) along the new aligned road into Maher Road.
Will Aircraft Station be rebuilt as part of the works?
Aircraft Station will be retained with a new pedestrian underpass built to
connect the existing station to Maher Road and Aviation Road. Aircraft Station
has a daily patronage of approximately 1000 passengers. The nearby Williams
Landing and Laverton Stations are premium stations with a daily patronage of about
4000 passengers at each.
How can I give my feedback on the design?
Community consultation is a critical part of the Level Crossing Removal Project and will help refine aspects of the road over rail design.
You can provide your feedback in person at one of our community drop-in sessions in March, where technical experts will be on hand to provide advice and answer your questions, or jump online to our engagement hub, to view the designs, post questions and fill in an online survey.
Feedback closes on Sunday 15 April 2018, so make sure you join the conversation and have your say.