Roadworks at the new roundabout at the Puketona Junction had also caused delays but the main cause on Wednesday was the breakdown.
Contractors were currently working on roundabout approaches and verges and concreting traffic islands. They were mindful of the disruption and trying to keep it to a minimum, he said.
The hold-ups sparked frustration for many motorists, including tow truck driver ''Tiny'' Dawson.
He said he got stuck for half an hour heading north in the morning and just over an hour heading south in the afternoon.
''It's just a joke,'' he fumed.
Dawson said contractors could have stopped the roadworks in the meantime and opened up the site to make the best of a bad situation.
He also questioned why a tow truck wasn't called to disable the truck's brakes and tow it out of the way. That could have taken a few hours but that was better than the five hours and counting the truck was stuck on the bridge.