Grant Road retaining walls

We are strengthening retaining walls on Grant Road in Thorndon between Newman Terrace and Goldies Brae.

Intersection of Grant Road and Goldies Brae in Wadestown.
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This work forms part of Wellington City Council’s ongoing programme of earthquake and natural disaster resilience works on retaining walls, tunnels and bridges.

Grant Road is an important transport link between the central city and Wadestown and the western suburbs, both in terms of how the city operates day-to-day, and in the event of a major earthquake as a key route out of the city.

The first phase of the project involves work to build a new reinforced concrete retaining wall below Grant Road, between Newman Terrace and Goldies Brae. The reinforced concrete wall will be 50m long, 2.6m high founded on 15 reinforced concrete piles 11m deep. The wall will be secured with 25 double corrosion steel anchors, each up to 12 metres long. Along the wall alignment, a 70m new pedestrian barrier will be built, as well as a new kerb and footpath. In addition two street light poles will be relocated and attached to the new wall. 

The second phase of the project, which is planned to start in July 2020, will include the strengthening of the existing 60-metre long retaining wall along the Grant Road slip road (below Grant Road) with the installation of 43 double corrosion steel anchors, 10-12 m deep. The work will include a plastering of the wall face.

Work hours and access

Crews will be working on the roadway between 9am and 4pm each day. During work hours traffic will be controlled by traffic signals and the road reduced to one lane. Outside of these hours, crews will only work off the roadway and the road will be open to two way traffic. Crews will be working Monday to Saturday throughout the year, but as with any roadworks, this is weather dependent.

Pedestrians will have a separate temporary walkway to safely travel past the work site. Cyclists should either dismount and walk through the pedestrian walkway, or stop at the temporary traffic signals and travel through on the green phase with motorists.

The total project cost for the two phases is around $3.6m.

More information

If you have a question about the Grant Road upgrade and roadworks, call us on 04 499 4444 or email us at info@wcc.govt.nz