The route was designated in 2009, and completed by 2011.

The route was designated as Highway 14 from 1926 to 1933.

The current route was designated along its entire present alignment in 1962.

At that time, the route was designated as part of Loop 302 until 1990.

Route 112 was one of the state's original routes designated in 1923.

By 1968, the route was designated onto its current alignment.

In 1964, the route was designated onto its current alignment.

The route was designated in 1964, shortly after the mine opened.

NC 5's route was designated in 1961 and it has not changed since then.

The route was designated in 1956 and has remained unchanged since.