[8] In 2007, the City of Montreal proposed a renewed bus rapid transit service on Pie-IX Boulevard as part of its transportation plan.

[12] Although the AMT planned for the Pie-IX BRT to begin operations in 2013, the project only received approval from the provincial government in 2015, with a tentative completion date of 2022.

[13] The approved project was less ambitious than the original proposal, calling only for the construction of bidirectional bus lanes and 15 BRT stops between Charleroi Street in Montréal-Nord and Pie-IX station in Hochelaga-Maisonneuve.

It was also announced that the Pie-IX BRT would be extended after all to Saint-Martin in Laval, as the provincial government agreed to rebuild Pie IX Bridge to carry the bus lanes across the Rivière des Prairies.

[15] The southern portion cancelled in 2015 was restored in 2019 when the province announced that the Pie-IX BRT would be extended southward to Notre-Dame Street, with construction to begin in spring 2022 and end in fall 2023.

Kyrielle by Montreal born artist Jean-Sébastien Denis consists of painted aluminium in 70 different varieties, fixed to the Pie-IX BRT shelters.

Later, as part of the development of the Montreal Metro, a White Line was proposed beneath Pie-IX Boulevard, but the project never moved past the planning stage.

Ahead of the 2021 Montreal municipal election, Projet Montréal proposed as part of its successful bid for a second mandate to implement a "Metrobus" with characteristics similar to the Pie-IX BRT on Henri-Bourassa Boulevard.

[20] The STM has also commissioned a prefeasibility study exploring the implementation of three BRT lines on Henri-Bourassa Boulevard, Côte-des-Neiges Road and Park Avenue, with the final report due in 2023.