The NSW government-funded Wagga Urban Highway Study was initially due to be handed down by the end of 2016.

After questions from The Daily Advertiser in November last year, a Transport for NSW spokesperson said the Wagga Urban Highway Study was due to be released early in 2021.

However, when questioned again on Friday as to a specific date, a spokesperson said it would be released as part of a more extensive report "shortly".

Mayor Greg Conkey said it was great to see plans to install traffic lights where Murray Street meets Edward Street, increase the capacity of the Docker Street and Sturt Highway junction and upgrade the Murray Street and Brookong Avenue intersection. But, he added, more needs to be done.

As the city grows, Cr Conkey said increasing traffic on the Sturt and Olympic highways means a broader plan will be needed.

"It's a whole corridor, not just a few intersections, and it starts from that notorious BBQ's Galore intersection," Cr Conkey said.

"We have been waiting on it for a long time. I don't know why it hasn't been released.

"We have heard bits and pieces, but we need to see the complete study to look at the big picture."

A Transport for NSW spokesperson said the study is a supporting attachment to the Wagga Transport Plan, which will shortly be released for public consultation.

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The spokesperson added that traffic volumes, safety and heavy vehicle use of the two major highways within Wagga - the Sturt and Olympic highways - are considered in the highway study using a range of evidence sources, including traffic information and origin-destination surveys.

"The study provides a picture of how these highways are performing now and how they may operate in the future," they said.

"Transport for NSW continually monitors the performance of Wagga's urban highway network.

"Transport for NSW reviews past growth and traffic performance forecasts against actual performance and updates future growth predictions accordingly, using these tools to refine priorities for investigation and development."

Cr Conkey said he could understand the frustrations Wagga residents might have about the long-awaited report, and it was a frustration he shared in.

"It's been a very long wait," he said.

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