The Dargaville Branch was built relatively late in comparison to most railway lines in New Zealand. Construction from
Waiotira on the North Auckland Line commenced in 1922, but Dargaville was not reached for another eighteen years. The first twenty-two kilometres through unstable country took six years to build, with the line not opened to Kirikopuni until 15 May 1928. In January 1931, the line was open to
Tangowahine, sixteen kilometres from Dargaville, but construction ceased for five years due to the
Great Depression. In 1940, trains commenced running to Dargaville, but the old railway station (used by the Donnellys Crossing Section) was closed and a new station built at a different location, delaying the formal opening of the Dargaville Branch until 15 March 1943, over twenty years after construction began. Initially, a railway from Kirikopuni north to
Kaikohe was proposed, but by 1928 when there was a line from Whangarei this proposal was discarded. However the line was initially constructed with a
balloon loop into the town of Kirikopuni, two kilometres north of the direct line to Dargaville, as a result of pressure from the local MP and Prime Minister
Gordon Coates. A bypass eliminated the loop in 1943. ==Operation==