At just 900m, Timaru's State Highway 78 (SH78), also known as Port Loop Rd, is the country's shortest state highway. This looping route means it is believed to be the only state highway to cross over itself, without including motorways on and off ramps. According to Waka Kotahi, state highways are roads in New Zealand that are used deliberately to move people and goods throughout the whole country. The term state highway is different from local roads which are built and maintained by local authorities like councils. In second place for shortest state highway is SH44, at 5.2km short it runs straights through the North Island city of New Plymouth.

Source: Stuff May 21, 2023 18:36 UTC