For more than a year, motorists endured seemingly endless roadworks on the northern side of the Brynderwyn Hills.
But if it saves lives, then it's worth it.
The NZ Transport Agency have come out with some statistics which suggest that flexible road safety barriers installed as part of the project have been hit at least 20 times since they were installed.
Brett Gliddon, the Transport Agency's Northland Highway Manager, said each time the barrier was damaged, it indicated a potential crash that someone had walked away from.
Head-on and "run-off-the road" accidents account for 75 per cent of Northland's crashes, and these are the barriers' accident-prevention forte.