The Waiho Bridge near Franz Josef reopened at midday after being out of action for two and a half weeks when the old bridge was washed away in flooding.
A long queue of cars has started to cross the new bridge which the Transport Agency built in 18 days.
Cars started driving across the bridge at 12pm and about 300 of them had already queued up on either side awaiting the signal.
A Māori blessing took place as part of a ceremony this morning and the crowd were then allowed to walk across the bridge, which is just south of Franz Josef.