Temporary, single-lane bridges are being deployed across six North island sites to re-link regions hit by last month's weather disasters.

Transport Minister Michael Wood delivered the update from Hawke's Bay.

The bridges are being used as an interim measure, enabled by the Government's $250 million top-up of the National Land transport fund.

Wood says three have been installed, with works underway on the other three.

He says they're just one short-term tool being used, with other options like single-lane access, and speed or weight restrictions being considered.