Here are some photos taken recently showing that they are nearly there:
Shared pathway road barrier #1: Waiwhakaiho River Bridge black spot fix nearly finished.
Shared pathway - western exit back on SH3
Shared pathway road barrier showing recent damage: The new barrier showing an impact from a vehicle already. The posts for the barrier are around 350 mm in from the kerb edge. The vehicle that did this would have given anyone on the shared path a great fright.
One can see earlier photos that show the situation that lead to NZTA agreeing to put in the barriers prior to making the two footpaths shared pathways at:
Cycling Access over Waiwhakaiho Bridge on SH3