Abseilers are removing loose rock on exposed by a landslip in the Manawatu Gorge last Thursday.
The slip is blocking State Highway 3 through the gorge, which will remain closed until the mass of unstable rock has been removed.
New Zealand Transport Agency regional journey manager Delaney Myers said abseilers had brought down a large overhang this morning and work was continuing.
"We're thrilled that the crews are making such good progress, and we're hopeful that the road can be safely reopened within the two week timeframe," Ms Myers said.
"We appreciate that every day the gorge is closed, it creates disruption for thousands of people. We are working as quickly as possible to remove the loose rock to ensure motorists remain protected. We thank the public for their patience while we get this work done swiftly but safely."