A long-awaited rail link to Australia's second busiest airport isn't "an unworthy project" but Victoria's premier is in no rush to build it.

Melbourne Airport is concerned Infrastructure Victoria’s (IV) draft strategy envisions the airport rail link – expected to cost up to $5 billion – being built between 2030 and 2045. The airport points to its own passenger forecasts that suggest the Tullamarine Freeway will hit capacity during peak hour in the…