One person was seriously injured this evening in a crash north of Wellington that closed the busy road in and out of the capital, delaying homeward bound commuters.

Emergency services were called to State Highway 1 at Pukerua Bay about 5.50pm and the road was closed. Traffic was diverted over the Paekakariki Hill Rd.

Just after 7pm, the New Zealand Transport Agency announced that the road was open again.

Police inspector John Spence said a helicopter was called to the scene and police were aware of one serious injury.