Pennsylvania also maintains relocated signed routes, interchanges, wye connections, rest areas, and truck escape ramps as unsigned state highways.

This western loop is an unsigned state highway known as Special Service Road 478.

Arizona Spur 202 is an unsigned state highway located in Phoenix.

An unsigned state highway, State Road 649, led from I-95's exit 85 to the industrial area.

Prior to 1963, the Thomaston-Northfield-Litchfield road was an unsigned state highway designated as State Road 854.

Other sections in the Detroit area became parts of M-102 or M-5 or unsigned state highway.

In 1933, Bear Mountain Boulevard was adopted as an unsigned state highway.

The segment of old M-55/M-76 is an unsigned state highway.

The original route into downtown Waterbury became an unsigned state highway with designation State Road 846.

First Avenue continues south of the interchange as an unsigned state highway (SR 745).