Construction of the Matagarup Bridge connecting Perth to the $1.8 billion Perth Stadium precinct has been further delayed.

WA Premier Mark McGowan revealed the latest setback on Radio 6PR's Breakfast program, confirming the footbridge would not be ready at the end of May despite previous assurances from Transport Minister Rita Saffioti.

The government was now hopeful the bridge would be completed in time for the AFL match between West Coast and Essendon on Thursday June 21, when many fans are expected to walk to the stadium after work from the CBD for the 6.10pm bouncedown.

Ms Saffioti said public transport services would be able to cope with added pressure during peak-hour commuter traffic for that round 14 clash if the footbridge was still incomplete.

"I've already talked to the Public Transport Authority and we've got two plans in place; [one for] bridge open, [another for] bridge not open," she told 6PR.