Labor would spend $139 million on bikeways across Brisbane if it was elected later this month, the party's lord mayoral candidate Rod Harding said on Friday.

Eight days out from the March 19 poll, Mr Harding said a $90 million dedicated cycle and pedestrian bridge that would link the CBD and Kangaroo Point, between the Story and Captain Cook bridges, would form the "heart" of the plan.

Labor lord mayoral candidate Rod Harding announcing the fast-tracking of a new pedestrian and cycle bridge last year. Credit:Kristian Silva

That bridge commitment was first announced about 10 months ago, about two months after Mr Harding was preselected at Labor's lord mayoral candidate, when he promised to fast-track the already planned river crossing.

The bridge was ultimately scrapped in Lord Mayor Graham Quirk's 2015-16 Brisbane City Council budget.