This change was first seen on state highway maps in 1978.

The route was first marked on state highway maps in 1982.

The new route number was first seen on the 1978 edition of the official state highway map.

The route did not appear on the official state highway map until the 1959 edition.

This change was seen on the state highway map in 1982.

The change was first seen on state highway maps in 1991.

It first appeared on the state highway map in 1946.

The changes were first noted on the 1978 edition of the official state highway map.

This change was first seen on the 1978-79 version of Nevada's state highway map.

The new number was first shown on the 1978-79 edition of the state highway map.

This change was first seen on state highway maps in 1978.

The route was first marked on state highway maps in 1982.

The new route number was first seen on the 1978 edition of the official state highway map.

The route did not appear on the official state highway map until the 1959 edition.

This change was seen on the state highway map in 1982.

The change was first seen on state highway maps in 1991.

It first appeared on the state highway map in 1946.

The changes were first noted on the 1978 edition of the official state highway map.

This change was first seen on the 1978-79 version of Nevada's state highway map.

The new number was first shown on the 1978-79 edition of the state highway map.