Waka Kotahi's pulling out all the stops to reconnect Coromandel Peninsula's State Highway 25A by March next year.

Cyclone Gabrielle devastated the region, and wiped out parts of the highway between Kopu and Hikuai.

Now up to 100 workers will work extended hours, seven days a week on a new bridge.

But Waka Kotahi's Jo Wilton says they can't account for all factors.

"We don't have a crystal ball, so we've worked everything out that we can get it done by March. But should we have another pandemic, or an earthquake, that will impact our progress."

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