Great Western Highway to remain closed for at least three months

Drone shot of a highway with a metal grate over the top.

The main road linking Sydney to Western New South Wales is shut off to traffic between Lithgow and Mount Victoria. (ABC Central West: Xanthe Gregory)

In short:

The NSW government warns the Great Western Highway closure will be lengthy due to serious safety issues.

The Victoria Pass was shut completely earlier this week due to cracking and movement in a historic convict-built bridge.

What's next?

Geotechnical assessments are expected to take a fortnight and repairs will then be another two months, at minimum.