Work underway on Riverdale Road

The one-way Riverdale Road.

Work has now begun on Riverdale Road, between George Street and Tipapakuku Road near Dannevirke, Tararua District Council says.

Repairs will be made to the large dropout or under slip caused by April's tropical cyclones.

Since the dropout the road has been reduced to one way past the slip, and restricted to light vehicles.

It has recently had to be closed due to the theft and vandalism of signs and temporary traffic lights used to ensure people's safety.

Drone surveying, geotechnical investigations, engineered design and building consenting processes have been completed and construction of the large retaining wall has begun, with the Tararua Alliance engaging local firm Morris & Bailey to complete the work.

This includes manufacturing the large concrete L-units which will be used to support the road.

The work will involve excavating the majority of the affected lane, construction of a concrete foundation, installation of the 2.5m high reinforced concrete L-units, backfilling and compacting to road level including four layers of geogrid reinforcing, construction of the road surface and installation of drainage assets and traffic services, including a guardrail beside the road.

Riverdale Road will remain closed at the dropout until the project has been completed, which is planned by Christmas.

Tararua District Council says it understands that many people use the road to get in and out of town, and appreciates motorists patience while this important project is carried out.