Warrego Highway west interchange

As part of work on the Toowoomba Second Range Crossing, a grade separated interchange is being constructed at the Warrego Highway at Charlton.


What's involved?

This involves constructing:

  • two on-ramps, enabling motorists to access the Toowoomba Second Range Crossing in both directions
  • two off-ramps, enabling eastbound and westbound motorists to exit the Toowoomba Second Range Crossing
  • a bridge, taking the Toowoomba Second Range Crossing over the Warrego Highway
  • two signalised intersections to allow road users to safely turn in and out of the Toowoomba Second Range Crossing
  • one signalised intersection for Nass Road and Wirth Road to allow access to the new Nass Road decoupling area.

Construction of the Warrego Highway west interchange will also involve permanently closing Willett Road at its intersection with the Warrego Highway. Access for local Willett Road residents and Toowoomba Speedway visitors will continue via Wirth Road.

Download the Warrego Highway west interchange factsheet


Completed works

Completed works include:

  • 12 Super T girders have been installed and concrete pours for the bridge deck and parapets (concrete barriers constructed on both sides of the bridge for the safety of road users crossing over and under the bridge) have been completed to form the bridge deck for the two-lane, two-span bridge over the Warrego Highway.

Upcoming works

Works currently underway include:

  • preparation works for the final road surface on the bridge including asphalting, installing the bridge expansion joints and line marking
  • constructing the Warrego Highway-Wirth Road-Nass Road intersection. Once complete, this will allow motorists to safely access the new Nass Road decoupling yard and Wirth Road through traffic lights
  • closing the existing east and westbound heavy vehicle decoupling yards adjacent to the Warrego Highway at Charlton following the opening of the new Nass Road decoupling yard.

Information on traffic impacts in the Charlton area is available on our traffic page.