The recommendation follows analysis of traffic data collected before and after the diversions were put in place.
The data shows a greater than 50 per cent reduction in the number of vehicles travelling along Macrae Road post-diversions.
Most of that traffic appears to have dispersed between Melville Beach and Macleod, Ardross and Kintail roads, all of which are designed to handle higher volumes of daily vehicle movements.
Traffic increases were also observed in other parts of the local road network, notably Macdonald Road where daily vehicle movements more than doubled, but all roads remained well below their maximum desirable volume.
Addressing council at its agenda briefing forum last week, City engineering manager Kimberly Brosztl said ensuring the safety of cyclists along Macrae Road, a key route in the Perth Bicycle Network, was the primary catalyst for the diversions.
She deemed the trial a success and said the safety benefits far outweighed inconvenience caused and the closures aligned with the Liveable Neighbourhoods planning policy and State Planning Strategy.
Earlier in the evening the council heard deputations from residents both for and against the permanent adoption of the diversions.
Representing Macrae Road residents, Ross Stuart said the high volume of traffic on Macrae Road before the diversions made it one of the most dangerous 1.5km stretches of road for cyclists in WA.
He was joined by professional traffic consultant Heidi Herget, who said there was a direct correlation between traffic volume and crash rates.
Speaking against the traffic diversions, Gairloch Street resident John Corser advocated investigating new solutions that did not affect the permeability of the road network around the clock for an issue that was mainly confined to morning peak periods.
Melville councillors are due to vote on the issue next week.